The Battle of Belgium or Belgian Campaign : Campagne des 18 jours; Dutch : Achttiendaagse Veldtocht), formed part of the greater Battle of France, an offensive campaign by Germany during the Second World War. It took place over 18 days in May 1940 and ended with the German occupation of Belgium following the surrender of the Belgian Army., often referred to within Belgium as the 18 Days' Campaign (French
Belgium, officially the Kingdom of Belgium, is a country in Western Europe. It is bordered by the Netherlands to the north, Germany to the east, Luxembourg to the southeast, France to the southwest, and the North Sea to the northwest. It covers an area of 30,688 km2 (11,849 sq mi) and has a population of more than 11.4 million. The capital and largest city is Brussels; other major cities are Antwerp, Ghent, Charleroi and Liège.
French is a Romance language of the Indo-European family. It descended from the Vulgar Latin of the Roman Empire, as did all Romance languages. French evolved from Gallo-Romance, the spoken Latin in Gaul, and more specifically in Northern Gaul. Its closest relatives are the other langues d'oïl—languages historically spoken in northern France and in southern Belgium, which French (Francien) has largely supplanted. French was also influenced by native Celtic languages of Northern Roman Gaul like Gallia Belgica and by the (Germanic) Frankish language of the post-Roman Frankish invaders. Today, owing to France's past overseas expansion, there are numerous French-based creole languages, most notably Haitian Creole. A French-speaking person or nation may be referred to as Francophone in both English and French.
On 10 May 1940, Germany invaded Luxembourg, the Netherlands, and Belgium under the operational plan Fall Gelb (Case Yellow). The Allied armies attempted to halt the German Army in Belgium, believing it to be the main German thrust. After the French had fully committed the best of the Allied armies to Belgium between 10 and 12 May, the Germans enacted the second phase of their operation, a break-through, or sickle cut, through the Ardennes, and advanced toward the English Channel. The German Army ( Heer ) reached the Channel after five days, encircling the Allied armies. The Germans gradually reduced the pocket of Allied forces, forcing them back to the sea. The Belgian Army surrendered on 28 May 1940, ending the battle.
The Battle of the Netherlands was a military campaign part of Case Yellow, the German invasion of the Low Countries and France during World War II. The battle lasted from 10 May 1940 until the surrender of the main Dutch forces on 14 May. Dutch troops in the province of Zeeland continued to resist the Wehrmacht until 17 May when Germany completed its occupation of the whole country.
The Manstein Plan is one of the names used to describe the war plan of the German Army during the Battle of France in 1940. The original invasion plan was a compromise devised by General Franz Halder, the chief of the Oberkommando des Heeres staff and satisfied no one. Documents with details of the plan fell into Belgian hands during the Mechelen incident of 10 January 1940 and the plan was revised several times, each giving more emphasis to an attack by Army Group A through the Ardennes, which progressively reduced the offensive by Army Group B through the Low Countries to a diversion.
The Allies of World War II, called the "United Nations" from the 1 January 1942 declaration, were the countries that together opposed the Axis powers during the Second World War (1939–1945). The Allies promoted the alliance as a means to control German, Japanese and Italian aggression.
The Battle of Belgium included the first tank battle of the war, the Battle of Hannut.It was the largest tank battle in history at the time but was later surpassed by the battles of the North African Campaign and the Eastern Front. The battle also included the Battle of Fort Eben-Emael, the first strategic airborne operation using paratroopers ever attempted.
The Battle of Hannut was a Second World War battle fought during the Battle of Belgium which took place between 12 and 14 May 1940 at Hannut in Belgium. It was the largest tank battle in the campaign. It was also the largest clash of tanks in armoured warfare history at the time.
The North African Campaign of the Second World War took place in North Africa from 10 June 1940 to 13 May 1943. It included campaigns fought in the Libyan and Egyptian deserts and in Morocco and Algeria, as well as Tunisia.
The Eastern Front of World War II was a theatre of conflict between the European Axis powers and co-belligerent Finland against the Soviet Union (U.S.S.R.), Poland and other Allies, which encompassed Central Europe, Eastern Europe, Northeast Europe (Baltics), and Southeast Europe (Balkans) from 22 June 1941 to 9 May 1945. It has been known as the Great Patriotic War in the former Soviet Union and modern Russia, while in Germany it was called the Eastern Front, or the German-Soviet War by outside parties.
The German official history stated that in the 18 days of bitter fighting, the Belgian Army were tough opponents, and spoke of the "extraordinary bravery" of its soldiers.The Belgian collapse forced the Allied withdrawal from continental Europe. The British Royal Navy subsequently evacuated Belgian ports during Operation Dynamo, allowing the British Expeditionary Force (BEF), along with many Belgian and French soldiers, to escape capture and continue military operations. France reached its own armistice with Germany in June 1940. Belgium was occupied by the Germans until the autumn of 1944, when it was liberated by the Western Allies.
The Royal Navy (RN) is the United Kingdom's naval warfare force. Although warships were used by the English kings from the early medieval period, the first major maritime engagements were fought in the Hundred Years' War against the Kingdom of France. The modern Royal Navy traces its origins to the early 16th century; the oldest of the UK's armed services, it is known as the Senior Service.
The Dunkirk evacuation, code-named Operation Dynamo, also known as the Miracle of Dunkirk, was the evacuation of Allied soldiers during World War II from the beaches and harbour of Dunkirk, in the north of France, between 26 May and 4 June 1940. The operation commenced after large numbers of Belgian, British, and French troops were cut off and surrounded by German troops during the six-week long Battle of France. In a speech to the House of Commons, British Prime Minister Winston Churchill called this "a colossal military disaster", saying "the whole root and core and brain of the British Army" had been stranded at Dunkirk and seemed about to perish or be captured. In his "we shall fight on the beaches" speech on 4 June, he hailed their rescue as a "miracle of deliverance".
The British Expeditionary Force (BEF) was the name of the British Army in Western Europe during the Second World War from 2 September 1939 when the BEF GHQ was formed until 31 May 1940, when GHQ closed down. Military forces in Britain were under Home Forces command. During the 1930s, the British government planned to deter war by rearming from the very low level of readiness of the early 30s and abolished the Ten Year Rule. The bulk of the extra money went to the Royal Navy and the Royal Air Force but plans were made to re-equip a small number of Army and Territorial Army divisions for service overseas.
The Belgian strategy for a defence against German aggression faced political as well as military problems. In terms of military strategy, the Belgians were unwilling to stake everything on a linear defence of the Belgian–German border, in an extension of the Maginot Line. Such a move would leave the Belgians vulnerable to a German assault in their rear, through an attack on the Netherlands. Such a strategy would also rely on the French to move quickly into Belgium and support the garrison there.
Military strategy is a set of ideas implemented by military organizations to pursue desired strategic goals. Derived from the Greek word strategos, the term strategy, when it appeared in use during the 18th century, was seen in its narrow sense as the "art of the general", or "'the art of arrangement" of troops. Military strategy deals with the planning and conduct of campaigns, the movement and disposition of forces, and the deception of the enemy.
The Maginot Line, named after the French Minister of War André Maginot, was a line of concrete fortifications, obstacles, and weapon installations built by France in the 1930s to deter invasion by Germany and force them to move around the fortifications. Constructed on the French side of its borders with Italy, Switzerland, Germany, and Luxembourg, the line did not extend to the English Channel due to French strategy that envisioned a move into Belgium to counter a German assault.
Politically, the Belgians did not trust the French. Marshal Philippe Pétain had suggested a French strike at Germany's Ruhr area using Belgium as a spring-board in October 1930 and again in January 1933. Belgium feared it would be drawn into a war regardless, and sought to avoid that eventuality. The Belgians also feared being drawn into a war as a result of the French–Soviet pact of May 1935. The Franco-Belgian agreement stipulated Belgium was to mobilise if the Germans did, but what was not clear was whether Belgium would have to mobilise in the event of a German invasion of Poland.
Henri Philippe Benoni Omer Joseph Pétain, generally known as Philippe Pétain, Marshal Pétain and The Old Marshal, was a French general officer who attained the position of Marshal of France at the end of World War I, during which he became known as The Lion of Verdun, and in World War II served as the Chief of State of Vichy France from 1940 to 1944. Pétain, who was 84 years old in 1940, ranks as France's oldest head of state.
The Ruhr is a polycentric urban area in North Rhine-Westphalia, Germany. With a population density of 2,800/km2 and a population of over 5 million (2017), it is the largest urban area in Germany and the third-largest in the European Union. It consists of several large cities bordered by the rivers Ruhr to the south, Rhine to the west, and Lippe to the north. In the southwest it borders the Bergisches Land. It is considered part of the larger Rhine-Ruhr metropolitan region of more than 10 million people, which is among the largest in Europe.
The Franco-Soviet Treaty of Mutual Assistance was a bilateral treaty between France and the Soviet Union with the aim of enveloping Nazi Germany in 1935 in order to reduce the threat from central Europe. It was pursued by Louis Barthou, the French foreign minister, but he was assassinated in October 1934, before negotiations were finished. His successor, Pierre Laval, was skeptical of both the desirability and the value of an alliance with the Soviet Union. However, after the declaration of German rearmament in March 1935 the French government forced the reluctant foreign minister to complete the arrangements with Moscow that Barthou had begun. The pact was concluded in Paris on May 2, 1935 and ratified by the French government in February 1936. Ratifications were exchanged in Moscow on March 27, 1936, and the pact went into effect on the same day. It was registered in League of Nations Treaty Series on April 18, 1936. On May 16, 1935 the Czechoslovak–Soviet Treaty of Alliance was signed between the two states as the consequence of Soviet treaty with France.
The Belgians much preferred an alliance with the United Kingdom. The British had entered the First World War in response to the German violation of Belgian neutrality. The Belgian Channel ports had offered the German Imperial Navy valuable bases, and such an attack would offer the German Kriegsmarine and the Luftwaffe bases to engage in strategic offensive operations against the United Kingdom in the coming conflict. But the British government paid little attention to the concerns of the Belgians. The lack of this commitment ensured the Belgian withdrawal from the Western Alliance, the day before the remilitarisation of the Rhineland.The lack of opposition to the remilitarisation served to convince the Belgians that France and Britain were unwilling to fight for their own strategic interests, let alone Belgium's. The Belgian General Staff was determined to fight for its own interests, alone if necessary.
The French were infuriated at King Leopold III's open declaration of neutrality in October 1936. The French Army saw its strategic assumptions undermined; it could no longer expect closer cooperation with the Belgians in defending the latter's eastern borders, enabling a German attack to be checked well forward of the French border.The French were dependent on how much cooperation they could extract from the Belgians. Such a situation deprived the French any prepared defences in Belgium to forestall an attack, a situation which the French had wanted to avoid as it meant engaging the German Panzer Divisions in a mobile battle. The French considered invading Belgium immediately in response to a German attack on the country. The Belgians, recognising the danger posed by the Germans, secretly made their own defence policies, troop movement information, communications, fixed defence dispositions, intelligence and air reconnaissance arrangements available to the French military attaché in Brussels.
The Allied plan to aid Belgium was the Dyle Plan; the cream of the Allied forces, which included the French armoured divisions, would advance to the Dyle river in response to a German invasion. The choice of an established Allied line lay in either reinforcing the Belgians in the east of the country, at the Meuse–Albert Canal line, and holding the Scheldt Estuary, thus linking the French defences in the south with the Belgian forces protecting Ghent and Antwerp, seemed to be the soundest defensive strategy.The weakness of the plan was that, politically at least, it abandoned most of eastern Belgium to the Germans. Militarily it would put the Allied rear at right angles to the French frontier defences; while for the British, their communications located at the Bay of Biscay ports, would be parallel to their front. Despite the risk of committing forces to central Belgium and an advance to the Scheldt or Dyle lines, which would be vulnerable to an outflanking move, Maurice Gamelin, the French commander, approved the plan and it remained the Allied strategy upon the outbreak of war.
The British, with no army in the field and behind in rearmament, was in no position to challenge French strategy, which had assumed the prominent role of the Western Alliance. Having little ability to oppose the French, the British strategy for military action came in the form of strategic bombing of the Ruhr industry.
Upon the official Belgian withdrawal from the Western Alliance, the Belgians refused to engage in any official staff meetings with the French or British military staff for fear of compromising its neutrality. The Belgians did not regard a German invasion as inevitable and were determined that if an invasion did take place it would be effectively resisted by new fortifications such as Eben Emael.The Belgians had taken measures to reconstruct their defences along the border with the German state upon Adolf Hitler's rise to power in January 1933. The Belgian government had watched with increasing alarm the German withdrawal from the League of Nations, its repudiation of the Treaty of Versailles and its violation of the Locarno Treaties. The government increased expenditure on modernising the fortifications at Namur and Liège. New lines of defence were established along the Maastricht–Bois-le-Duc canal, joining the Meuse, Scheldt and the Albert Canal. The protection of the eastern frontier, based mainly on the destruction of a number of roads, was entrusted to new formations (frontier cyclist units and the newly formed Chasseurs Ardennais ). By 1935, the Belgian defences had been completed. Even so, it was felt that the defences were no longer adequate. A significant mobile reserve was needed to guard the rear areas, and as a result it was considered that the protection against a sudden assault by German forces was not sufficient. Significant manpower reserves were also needed, but a bill made for the provision of longer military service and training for the army was rejected by the public on the basis that it would increase Belgium's military commitments as well as the request of the Allies to engage in conflicts far from home.
King Leopold III made a speech on 14 October 1936 in front of the Council of Ministers, in an attempt to persuade the people (and its Government) that the defences needed strengthening.He outlined three main military points for Belgium's increased rearmament:
a) German rearmament, following upon the complete re-militarisation of Italy and Russia (the Soviet Union), caused most other states, even those that were deliberately pacifistic, like Switzerland and the Netherlands, to take exceptional precautions.
b) There has been such a vast change in the methods of warfare as a result of technical progress, particularly in aviation and mechanization, that the initial operations of armed conflict could now be of such force, speed and magnitude as to be particularly alarming to small countries like Belgium.
c) Our anxieties have been increased by the lightning reoccupation of the Rhineland and the fact that bases for the start of a possible German invasion have been moved near to our frontier.
On 24 April 1937, the French and British delivered a public declaration that Belgium's security was paramount to the Western Allies and that they would defend their frontiers accordingly against aggression of any sort, whether this aggression was directed solely at Belgium, or as a means of obtaining bases from which to wage war against "other states". The British and French, under those circumstances, released Belgium from her Locarno obligations to render mutual assistance in the event of German aggression toward Poland, while the British and French maintained their military obligations to Belgium.
Militarily, the Belgians considered the Wehrmacht to be stronger than the Allies, particularly the British Army, and engaging in overtures to the Allies would result in Belgium becoming a battleground without adequate Allies. 70 kilometres (43 mi), freeing more forces for use as a strategic reserve. It was felt it would save more Belgian territory, in particular the eastern industrial regions. It also had the advantage of absorbing Dutch and Belgian Army formations (including some 20 Belgian divisions). Gamelin was to justify the Dyle Plan after the defeat using these arguments.The Belgians and French remained confused about what was expected of each other if or when, hostilities commenced. The Belgians were determined to hold the border fortifications along the Albert Canal and the Meuse, without withdrawing, until the French Army arrived to support them. Gamelin was not keen on pushing his Dyle plan that far. He was concerned that the Belgians would be driven out of their defences and would retreat to Antwerp, as in 1914. In fact, the Belgian divisions protecting the border were to withdraw and retreat southward to link up with French forces. This information was not given to Gamelin. As far as the Belgians were concerned, the Dyle Plan had advantages. Instead of the limited Allied advance to the Scheldt, or meeting the Germans on the Franco-Belgian border, the move to the Dyle river would reduce the Allied front in central Belgium by
On 10 January 1940, in an episode known as the Mechelen Incident, a German Army Major Hellmuth Reinberger crash-landed in a Messerschmitt Bf 108 near Mechelen-aan-de-Maas.Reinberger was carrying the first plans for the German invasion of western Europe which, as Gamelin had expected, entailed a repeat of the 1914 Schlieffen Plan and a German thrust through the Belgium (which was expanded by the Wehrmacht to include the Netherlands) and into France.
The Belgians suspected a ruse, but the plans were taken seriously. Belgian intelligence and the military attaché in Cologne correctly suggested the Germans would not commence the invasion with this plan. It suggested that the Germans would try an attack through the Belgian Ardennes and advance to Calais with the aim of encircling the Allied armies in Belgium. The Belgians had correctly predicted the Germans would attempt a Kesselschlacht (literally "Cauldron battle", meaning encirclement), to destroy its enemies. The Belgians had predicted the exact German plan as offered by Erich von Manstein.
The Belgian High Command warned the French and British of their concerns. They feared that the Dyle plan would put not just the Belgian strategic position in danger, but also the entire left wing of the Allied front. King Leopold and General Raoul Van Overstraeten, the King's Aide de Camp, warned Gamelin and the French Army Command of their concerns on 8 March and 14 April. They were ignored.
The Belgian plan, in the event of German aggression [italics in original] provided for:
(a) A delaying position along the Albert Canal from Antwerp to Liège and the Meuse from Liège to Namur, which was to be held long enough to allow French and British troops to occupy the line Antwerp–Namur–Givet. It was anticipated that the forces of the guarantor Powers would be in action on the third day of an invasion.
(b) Withdrawal to the Antwerp–Namur position.
(c) The Belgian Army was to hold the sector–excluding Leuven, but including Antwerp–as part of the main Allied defensive position.
In an agreement with the British and French Armies, the French 7th Army under the command of Henri Giraud was to advance into Belgium, past the Scheldt Estuary in Zeeland if possible, to Breda, in the Netherlands. The British Army's British Expeditionary Force or BEF, commanded by General John Vereker, Lord Gort, was to occupy the central position in the Brussels–Ghent gap supporting the Belgian Army holding the main defensive positions some 20 kilometres (12 mi) east of Brussels. The main defensive position ringing Antwerp would be protected by the Belgians, barely 10 kilometres (6.2 mi) from the city. The French 7th Army was to reach the Zeeland or Breda, just inside the Dutch border. The French would then be in a position to protect the left flank of the Belgian Army forces protecting Antwerp and threaten the German northern flank.
Further east, delaying positions were constructed in the immediate tactical zones along the Albert Canal, which joined with the defences of the Meuse west of Maastricht. The line deviated southward, and continued to Liege. The Maastricht–Liège gap was heavily protected. Fort Eben-Emael guarded the city's northern flank, the tank country lying in the strategic depths of the Belgian forces occupying the city and the axis of advance into the west of the country. Further lines of defence ran south west, covering the Liege–Namur axis. The Belgian Army also had the added benefit of the French 1st Army, advancing toward Gembloux and Hannut, on the southern flank of the BEF and covering the Sambre sector. This covered the gap in the Belgian defences between the main Belgian positions on the Dyle line with Namur to the south. Further south still, the French 9th Army advanced to the Givet–Dinant axis on the Meuse river. The French 2nd Army was responsible for the last 100 kilometres (62 mi) of front, covering Sedan, the lower Meuse, the Belgian–Luxembourg border and the northern flank of the Maginot line.
The German plan of attack required that Army Group B would advance and draw in the Allied First Army Group into central Belgium, while Army Group A conducted the surprise assault through the Ardennes. Belgium was to act as a secondary front with regard to importance. Army Group B was given only limited numbers of armoured and mobile units while the vast majority of the Army Group comprised infantry divisions.After the English Channel was reached, all Panzer division units and most motorised infantry were removed from Army Group B and given to Army Group A to strengthen the German lines of communication and to prevent an Allied breakout.
Such a plan would still fail if sufficient ground could not be taken quickly in Belgium to squeeze the allies against two fronts. Preventing this from happening were the defences of Fort Eben-Emael and the Albert Canal. The three bridges over the canal were the key to allowing Army Group B a high operational tempo. The bridges at Veldwezelt, Vroenhoven and Kanne in Belgium and Maastricht on the Dutch border were the target.Failure to capture the bridges would leave Reichenau's German 6th Army, the southern-most army of Group B, trapped in the Maastricht-Albert Canal enclave and subjected to the fire of Eben-Emael. The fort had to be captured or destroyed.
Adolf Hitler summoned Lieutenant-General Kurt Student of the 7. Flieger-Division (7th Air Division) to discuss the assault. metres alone.It was first suggested that a conventional parachute drop be made by airborne forces to seize and destroy the forts' guns before the land units approached. Such a suggestion was rejected as the Junkers Ju 52 transports were too slow and were likely to be vulnerable to Dutch and Belgian anti-aircraft guns. Other factors for its refusal were the weather conditions, which might blow the paratroopers away from the fort and disperse them too widely. A seven-second drop from a Ju 52 at minimum operational height led to a dispersion over 300
Hitler had noticed one potential flaw in the defences. 50 kilograms (110 lb) explosive weapon which would destroy the Belgian gun emplacements. It was this tactical unit that would spearhead the first strategic airborne operation in history.The roofs were flat and unprotected; he demanded to know if a glider, such as the DFS 230, could land on them. Student replied that it could be done but only by 12 aircraft and in daylight; this would deliver 80–90 paratroopers onto the target. Hitler then revealed the tactical weapon that would make this strategic operation work, introducing the Hohlladungwaffe (hollow-charge) – a
The Belgian Army could muster twenty-two divisions, mm antitank gun and a coaxial FN30 machine gun in a turret. The Belgians also possessed forty-two T-15s. They were described as armoured cars but were actually fully tracked tanks with a 13.2 mm turret machine gun. The standard Belgian anti-tank gun was the 47 mm FRC, towed either by trucks or by fully tracked armoured Utilitie B-tractors. One report states that a round from a 47 mm gun went straight through a Sd.Kfz. 231 and penetrated the armour of the Panzer IV behind it.[ citation needed ] These Belgian guns were better than the 25 mm and 37 mm guns of respectively the French and the Germans.which contained 1,338 artillery pieces but just 10 AMC 35 tanks. However, the Belgian combat vehicles included 200 T-13 tank destroyers. These had an excellent 47
The Belgians began mobilisation on 25 August 1939 and by May 1940 mounted a field army of eighteen infantry divisions, two divisions of partly motorised Chasseurs Ardennais and two motorised cavalry divisions, totaling some 600,000 men.Belgian reserves may have been able to field 900,000 men. The army lacked armour and anti-aircraft guns.
After the completion of the mobilisation, the army could muster five regular army corps (including the I Corps) and two reserve corps consisting of twelve regular infantry divisions, two divisions of Chasseurs Ardennais, six reserve infantry divisions, one brigade of Cyclist Frontier Guards, one Cavalry Corps of two divisions, and one brigade of motorised cavalry.The Army also had two anti-aircraft artillery, four artillery regiments, and an unknown number of fortress, engineer, and signals force personnel.
The Belgian Naval Corps (Corps de Marine) was resurrected in 1939. Most of the Belgian merchant fleet, some 100 ships, evaded capture by the Germans. Under the terms of a Belgian–Royal Navy agreement, these ships and their 3,350 crewmen were placed under British control for the duration of hostilities.The General Headquarters of the Belgian Admiralty was at Ostend under the command of Major Henry Decarpentrie. The First Naval Division was based at Ostend, while the Second and Third divisions were based at Zeebrugge and Antwerp.
The Aéronautique Militaire Belge (Belgian Air Force - AéMI) had barely begun to modernise their aircraft technology. The AéMI had ordered Brewster Buffalo, Fiat CR.42, and Hawker Hurricane fighters, Koolhoven F.K.56 trainers, Fairey Battle and Caproni Ca.312 light bombers, and Caproni Ca.335 fighter-reconnaissance aircraft, but only the Fiats, Hurricanes, and Battles had been delivered. The shortage of modern types meant single-seat versions of the Fairey Fox light bomber were being used as fighters.The AéMI possessed 250 combat aircraft. At least 90 were fighters, 12 were bombers and 12 were reconnaissance aircraft. Only 50 were of a reasonably modern standard. When liaison and transport aircraft from all services are included, the total strength was 377; however only 118 of these were serviceable on 10 May 1940. Of this number around 78 were fighters and 40 were bombers.
The AéMI was commanded by Paul Hiernaux, who had received his pilot's license just before the outbreak of World War I, and had risen to the position of Commander-in-Chief in 1938.Hiernaux organised the service into three Régiments d'Aéronautique (air regiments): the 1er with 60 aircraft, the 2ème with 53 aircraft, and the 3ème with 79 aircraft.
The Belgians were afforded substantial support by the French Army. The French 1st Army included General René Prioux's Cavalry Corps. The Corps was given the 2nd Light Mechanized Division (2e Division Légère Mécanique, or 2e DLM) and the 3rd Light Mechanized Division (3e DLM), which were allocated to defend the Gembloux gap. The armoured forces consisted of 176 of the formidable SOMUA S35s and 239 Hotchkiss H35 light tanks. Both of these types, in armour and firepower, were superior to most German types.The 3e DLM contained 90 S35s and some 140 H35s alone.
The French 7th Army was assigned to protect the northernmost part of the Allied front. It contained the 1st Light Mechanized Division (1re DLM), the 25th Motorised Infantry Division (25e Division d'Infanterie Motorisée, or 25e DIM) and the 9th Motorised Infantry Division (9e DIM). This force would advance to Breda in the Netherlands.
The third French army to see action on Belgian soil was the 9th. It was weaker than both the 7th and the 1st Armies. The 9th Army was allocated infantry divisions, with the exception of the 5th Motorised Infantry Division (5e DIM). Its mission was to protect the southern flank of the Allied armies, south of the Sambre river and just north of Sedan. Further south, in France, was the French 2nd Army, protecting the Franco-Belgian border between Sedan and Montmédy. The two weakest French armies were thus protecting the area of the main German thrust.
The British contributed the weakest force to Belgium. The BEF, under the command of General Lord Gort VC, consisted of just 152,000 men in two corps of two divisions each. It was hoped to field two armies of two Corps each, but this scale of mobilisation never took place. The I Corps was commanded by Lt-Gen. John Dill, later Lt-Gen. Michael Barker, who was in turn replaced by Major-General Harold Alexander. Lt-Gen. Alan Brooke commanded II Corps. Later the III Corps under Lt-Gen. Ronald Adam was added to the British order of battle. A further 9,392 Royal Air Force (RAF) personnel of the RAF Advanced Air Striking Force under the command of Air Vice-Marshal Patrick Playfair was to support operations in Belgium. By May 1940 the BEF had grown to 394,165 men, of whom more than 150,000 were part of the logistical rear area organisations and had little military training.On 10 May 1940, the BEF comprised just 10 divisions (not all at full strength), 1,280 artillery pieces and 310 tanks.
Army Group B was commanded by Fedor von Bock. It was allocated 26 infantry and three Panzer divisions for the invasion of the Netherlands and Belgium.Of the three Panzer Divisions, the 3rd and 4th were to operate in Belgium under the command of the 6th Army's XVI Corps. The 9th Panzer Division was attached to the 18th Army which, after the Battle of the Netherlands, would support the push into Belgium alongside the 18th Army and cover its northern flank.
Armour strength in Army Group B amounted to 808 tanks, of which 282 were Panzer Is, 288 were Panzer IIs, 123 were Panzer IIIs and 66 were Panzer IVs;49 command tanks were also operational. The 3rd Panzer Division's armoured regiments consisted of 117 Panzer Is, 128 Panzer IIs, 42 Panzer IIIs, 26 Panzer IVs and 27 command tanks. The 4th Panzer Division had 136 Panzer Is, 105 Panzer IIs, 40 Panzer IIIs, 24 Panzer IVs and 10 command tanks. The 9th Panzer, scheduled initially for operations in the Netherlands, was the weakest division with only 30 Panzer Is, 54 Panzer IIs, 41 Panzer IIIs, 16 Panzer IVs and 12 command tanks The elements drawn from the 7th Air Division and the 22nd Airlanding Division, that were to take part in the attack on Fort Eben-Emael, were named Sturmabteilung Koch (Assault Detachment Koch); named after the commanding officer of the group, Hauptmann Walter Koch. The force was assembled in November 1939. It was primarily composed of parachutists from the 1st Parachute Regiment and engineers from the 7th Air Division, as well as a small group of Luftwaffe pilots. The Luftwaffe allocated 1,815 combat, 487 transport aircraft and 50 gliders for the assault on the Low Countries.
The initial air strikes over Belgian air space were to be conducted by IV. Fliegerkorps under General der Flieger Generaloberst Alfred Keller. Keller's force consisted of Lehrgeschwader 1 (Stab. I., II., III., IV.), Kampfgeschwader 30 (Stab. I., II., III.) and Kampfgeschwader 27 (III.).On 10 May Keller had 363 aircraft (224 serviceable) augmented by Generalmajor Wolfram von Richthofen's VIII. Fliegerkorps with 550 (420 serviceable) aircraft. They in turn were supported by Oberst Kurt-Bertram von Döring's Jagdfliegerführer 2 , with 462 fighters (313 serviceable).
Keller's IV. Fliegerkorps headquarters would operate from Düsseldorf, LG 1. Kampfgeschwader 30 which was based at Oldenburg and its III. Gruppe were based at Marx. Support for Döring and Von Richthofen came from present-day North Rhine-Westphalia and bases in Grevenbroich, Mönchengladbach, Dortmund and Essen.
During the evening of 9 May, the Belgian Military attaché in Berlin intimated that the Germans intended to attack the following day. Offensive movement of enemy forces were detected on the border. At 00:10 on 10 May 1940, at General Headquarters an unspecified squadron in Brussels gave the alarm. am. Belgian forces took up their deployment positions. The Allied armies had enacted their Dyle plan on the morning of 10 May, and were approaching the Belgian rear. King Leopold had gone to his Headquarters near Briedgen, Antwerp.A full state of alert was instigated at 01:30
The Luftwaffe was to spearhead the aerial battle in the low countries. Its first task was the elimination of the Belgian air contingent. Despite an overwhelming numerical superiority of 1,375 aircraft, 957 of which were serviceable, the air campaign in Belgium had limited success overall on the first day.At roughly 04:00, the first air raids were conducted against airfields and communication centres. It still had a tremendous impact on the AéMI, which had only 179 aircraft on 10 May.
Much of the success achieved was down to Richthofen's subordinates, particularly Kampfgeschwader 77 and its commander Oberst Dr. Johann-Volkmar Fisser whose attachment to VIII. Fliegerkorps, was noted by Generalmajor Wilhelm Speidel. He commented that it "was the result of the well-known tendency of the commanding general to conduct his own private war".Fisser's KG 77 destroyed the AéMI main bases, with help from KG 54. Fighters from Jagdgeschwader 27 (JG 27) eliminated two Belgian squadrons at Neerhespen, and during the afternoon, I./St.G 2 destroyed nine of the 15 Fiat CR.42 fighters at Brusthem. At Schaffen-Diest, three Hawker Hurricanes of Escadrille 2/I/2 were destroyed and another six damaged when a wave of He 111s caught them as they were about to take off. A further two were lost in destroyed hangars. At Nivelles airfield, 13 CR42s were destroyed. The only other success was KG 27s destruction of eight aircraft at Belesle.
In aerial combat the battles were also one-sided. Two He 111s, two Do 17s and three Messerschmitt Bf 109s were shot down by Gloster Gladiators and Hurricanes. In return, eight Belgian Gladiators, five Fairey Foxs and one CR42 were shot down by JG 1, 21 and 27. No. 18 Squadron RAF sent two Bristol Blenheims on operations over the Belgian front, but lost both to Bf 109s. By the end of the 10 May, the official German figures indicate claims for 30 Belgian aircraft destroyed on the ground, and 14 (plus the two RAF bombers) in the air for 10 losses.The victory claims are likely an undercount. A total of 83 Belgian machines–mostly trainers and "squadron hacks", were destroyed. The AéMI flew only 146 sorties in the first six days. Between 16 May and 28 May, the AéMI flew just 77 operations. It spent most of its time and fuel withdrawing in the face of Luftwaffe attacks.
The German planners had recognised the need to eliminate Fort Eben-Emael if their army was to break into the interior of Belgium. It decided to deploy airborne forces ( Fallschirmjäger ) to land inside the fortress perimeter using gliders.Using special explosives (and flamethrowers) to disable the defences, the Fallschirmjäger then entered the fortress. In the ensuing battle, German infantry overcame the defenders of the I Belgian Corps' 7th Infantry Division in 24 hours.The main Belgian defence line had been breached and German infantry of the 18th Army had passed through it rapidly. Moreover, German soldiers had established bridgeheads across the Albert Canal before the British were able to reach it some 48 hours later. The Chasseurs Ardennais further south, on the orders of their commander, withdrew behind the Meuse, destroying some bridges in their wake. The German airborne forces were assisted by Junkers Ju 87 Stukas of III./ Sturzkampfgeschwader 2 (StG 2) and I./ Sturzkampfgeschwader 77 (StG 77) helped suppress the defences. Henschel Hs 123s of II.(S)./Lehrgeschwader 2 (LG 2) which assisted in the capture of the bridges at Vroenhoven and Veldwezelt in the immediate area.
Further successful German airborne offensive operations were carried out in Luxembourg which seized five crossings and communication routes leading into central Belgium. The offensive, carried out by 125 volunteers of the 34th Infantry Division under the command of Wenner Hedderich, achieved their missions by flying to their objectives using Fieseler Fi 156 Störche. The cost was the loss of five aircraft and 30 dead.With the fort breached, the Belgian 4th and 7th Infantry Divisions were confronted by the prospect of fighting an enemy on relatively sound terrain (for armour operations). The 7th Division, with its 2nd and 18th Grenadier Regiments and 2nd Carabineers, struggled to hold their positions and contain the German infantry on the west bank. The Belgian tactical units engaged in several counterattacks. At one point, at Briegden, they succeeded in retaking the bridge and blowing it up. At the other points, Vroenhoven and Veldwezelt, the Germans had had time to establish strong bridgeheads and repulsed the attacks.
A little-known third airborne operation, Operation Niwi, was also conducted on 10 May in southern Belgium. The objective of this operation was to land two companies of the 3rd battalion Grossdeutschland Infantry Regiment by Fi 156 aircraft at Nives and Witry metres) saw 200 of these aircraft used in the assault. The operational mission was to:in the south of the country, in order to clear a path for the 1st and 2nd Panzer divisions which were advancing through the Belgian–Luxembourg Ardennes. The original plan called for the use of Junkers Ju 52 transport aircraft, but the short-landing capability of the Fi 156 (27
1. Cut signal communications and message links on the Neufchâteau–Bastogne and Neufchâteau–Martelange roads. [Neufchâteau being the largest southern-most city in Belgium]
2. Prevent the approach of reserves from the Neufchâteau area
3. Facilitate the capture of pillboxes and the advance by exerting pressure against the line of pillboxes along the border from the rear.
The German infantry were engaged by several Belgian patrols equipped with T-15 light tanks. Several Belgian counterattacks were repulsed, among them an attack by the 1st Light Chasseurs Ardennais Division. Unsupported, the Germans faced a counterattack later in the evening by elements of the French 5th Cavalry Division, dispatched by General Charles Huntziger from the French 2nd Army, which had "massive" tank strength. The Germans were forced to retreat. The French, however, failed to pursue the fleeing Germans, stopping at a dummy barrier.By the next morning, the 2nd Panzer Division had reached the area, and the mission had largely been accomplished. From the German perspective, the operation hindered rather than helped Heinz Guderian's Panzer Corps. The regiment had blocked the roads and, against the odds, prevented French reinforcements reaching the Belgian–Franco-Luxembourg border, but it also destroyed Belgian telephone communications. This inadvertently prevented the Belgian field command recalling the units along the border. The 1st Belgian Light Infantry did not receive the signal to retreat and engaged in a severe fire-fight with the German armour, slowing down their advance.
The failure of the Franco–Belgian forces to hold the Ardennes gap was fatal. The Belgians had withdrawn laterally upon the initial invasion and had demolished and blocked routes of advance, which held up the French 2nd Army moving north toward Namur and Huy. Devoid of any centre of resistance, the German assault engineers had cleared the obstacles unchallenged. The delay that the Belgian Ardennes Light Infantry, considered to be an elite formation, could have inflicted upon the advancing German armour was proved by the fight for Bodange, where the 1st Panzer Division was held up for a total of eight hours. This battle was a result of a breakdown in communications and ran contrary to the operational intentions of the Belgian Army.
Meanwhile, in the central Belgian sector, having failed to restore their front by means of ground attack, the Belgians attempted to bomb the bridges and positions that the Germans had captured intact and were holding on 11 May. Belgian Fairey Battles of 5/III/3 escorted by six Gloster Gladiators attacked the Albert Canal bridges. Bf 109s from I./Jagdgeschwader 1 (JG 1) and I./JG 27 intercepted and JG 1 shot down four Gladiators and both units destroyed six Battles and heavily damaged the remaining three. Eight CR.42s were evacuated from Brustem to Grimbergen near Brussels but seven Gladiators and the last remaining Hurricanes from 2/I/2 Escadrille were destroyed at Beauvechain Air Base and Le Culot by He 111s and I./JG 27 respectively.The RAF contributed to the effort to attack the bridges. The British dispatched Bristol Blenheims from 110 and 21 Squadron—the first squadron lost two, one to I./JG 27. 21 Squadron suffered damage to most of the bombers because of intense ground-fire. The French Armée de l'air dispatched LeO 451s from GBI/12 and GBII/12 escorted by 18 Morane-Saulnier M.S.406 of GCIII/3 and GCII/6. The operation failed and one bomber was lost while four M.S.406s fell to I.JG 1. The French claimed five. Meanwhile, 114 Squadron lost six Blenheims destroyed when Dornier Do 17s of Kampfgeschwader 2 bombed their airfield at Vraux. Another Battle of No. 150 Squadron RAF was lost in another raid.
The German counter-air operations were spearheaded by Jagdgeschwader 26 (JG 26) under the command of Hans-Hugo Witt, which was responsible for 82 of the German claims in aerial combat between 11 and 13 May.Despite the apparent success of the German fighter units, the air battle was not one-sided. On the morning of 11 May ten Ju 87s of StG 2 were shot down attacking Belgian forces in the Namur–Dinant gap, despite the presence of two Jagdgeschwader—27 and 51 . Nevertheless, the Germans reported a weakening in Allied air resistance in northern Belgium by 13 May.
During the night of 11 May, the British 3rd Infantry Division under the command of General Bernard Law Montgomery, reached its position on the Dyle river at Leuven. As it did so the Belgian 10th Infantry Division, occupying the position, mistook them for German parachutists and fired on them. The Belgians refused to yield but Montgomery claimed to have got his way by placing himself under the command of the Belgian forces, knowing that when the Germans came within artillery range the Belgians would withdraw.
Alan Brooke, commander of the British II Corps sought to put the matter of cooperation right with King Leopold. The King discussed the matter with Brooke, who felt a compromise could be reached. Van Overstraeten, the King's military aide, stepped in and said that the 10th Belgian Infantry Division could not be moved. Instead, the British should move further south and remain completely clear of Brussels. Brooke told the King that the 10th Belgian Division was on the wrong side of the Gamelin line and was exposed. Leopold deferred to his advisor and chief of staff. Brooke found Overstaeten to be ignorant of the situation and the dispositions of the BEF. Given that the left flank of the BEF rested on its Belgian ally, the British were now unsure about Belgian military capabilities.The Allies had more serious grounds for complaint about the Belgian anti-tank defences along the Dyle line, that covered the Namur–Perwez gap which was not protected by any natural obstacles. Only a few days before the attack, General Headquarters had discovered the Belgians had sited their anti-tank defences (de Cointet defences) several miles east of the Dyle between Namur–Perwez.
After holding onto the Albert Canal's west bank for nearly 36 hours, the 4th and 7th Belgian infantry divisions withdrew. The capture of Eben-Emael allowed the Germans to force through the Panzers of the 6th Army. The situation for the Belgian divisions was either to withdraw or be encircled. The Germans had advanced beyond Tongeren and were now in a position to sweep south to Namur, which would threaten to envelop the entire Albert Canal and Liège positions. Under the circumstances, both divisions withdrew.On the evening of 11 May, the Belgian Command withdrew its forces behind the Namur–Antwerp line. The following day, the French 1st Army arrived at Gembloux, between Wavre and Namur, to cover the "Gembloux gap". It was a flat area, devoid of prepared or entrenched positions.
The French 7th Army, on the northern flank of the Belgian line, protected the Bruges–Ghent–Ostend axis and, covering the Channel ports, had advanced into Belgium and into the Netherlands with speed. It reached Breda in the Netherlands, on 11 May. But German parachute forces had seized the Moerdijk bridge on the Hollands Diep river, south of Rotterdam, making it impossible for the French to link up with the Dutch Army. The Dutch Army withdrew north to Rotterdam and Amsterdam. 20 kilometres (12 mi) east of Breda at Tilburg. The battle resulted in the French retiring, in the face of Luftwaffe air assaults, to Antwerp. It would later help in the defence of the city. The Luftwaffe had given priority to attacking the French 7th Army's spearhead into the Netherlands as it threatened the Moerdijk bridgehead. Kampfgeschwader 40 and 54 supported by Ju 87s from VIII. Fliegerkorps helped drive them back. Fears of Allied reinforcements reaching Antwerp forced the Luftwaffe to cover the Scheldt estuary. KG 30 bombed and sank two Dutch gunboats and three Dutch destroyers, as well as badly damaging two Royal Navy destroyers. But overall the bombing had a limited effect.The French 7th Army turned east and met the 9th Panzer Division about
Following the arrival of Gamelin's military envoy, General Champon (10 May)The Belgian government's strategy became, to conform with the French strategy. This affirmed the Dyle plan: concentrating Belgian forces in the centre of Belgium, by withdrawing behind the K-W line, extending from Antwerp to Wavre. French forces would cover two obvious gaps: one, between Wavre and Namur, known as the "Gembloux gap" and another centred on Dinant, from the French border to the city of Namur. The gap was an unfortified, untrenched space in the main Belgian defensive line. 20 kilometres (12 mi) to 30 kilometres (19 mi).stretched from the southern end of the Dyle line, from Wavre in the north, to Namur in the south,
During the night of 11/12 May, the Belgians were fully engaged in withdrawing to the Dyle line, covered by a network of demolitions and rearguards astride Tongeren. During the morning of 12 May, King Leopold III, General van Overstraeten, Édouard Daladier, General Alphonse Georges (commander of the First Allied army Group, comprising the BEF, French 1st, 2nd, 7th and 9th Armies), General Gaston Billotte (coordinator of the Allied Armies) and General Henry Royds Pownall, Gort's chief of staff, met for a military conference near Mons. It was agreed the Belgian Army would man the Antwerp–Leuven line, while its allies took up the responsibility of defending the extreme north and south of the country.
The Belgian III Corps, and its 1st Chasseurs Ardennais, 2nd Infantry and 3rd Infantry Divisions had withdrawn from the Liège Fortified Position (PFL) to avoid being encircled. One regiment, the Liège Fortress Regiment, stayed behind to disrupt German communications. Further to the south, the Namur Fortified Position (PFN), manned by VI Corps' 5th Infantry Division and the 2nd Chasseurs Ardennais with the 12th French Infantry Division, fought delaying actions and participated in a lot of demolition work while guarding the position.
As far as the Belgians were concerned, it had accomplished the only independent mission assigned to it: to hold the Liège–Albert Canal line long enough for the Allied units to reach friendly forces occupying the Namur–Antwerp–Givet line. For the remainder of the campaign, the Belgians would execute their operations in accordance with the overall Allied plan.
As units already on the Dyle line worked tirelessly to organise better defensive positions in the Leuven–Antwerp gap, other Belgian soldiers fought rearguard actions. The 2nd Regiment of Guides and the 2nd Carabineers Cyclists of the 2nd Belgian Cavalry Division covered the retreat of the 4th and 7th Belgian divisions and were particularly distinguished at Tienen (Tirlemont) and Halen.
In support of Belgian forces in the area, the RAF and French flew air defence operations over Tienen and Leuven (Louvain). The RAF Advanced Air Striking Force committed 3, 504, 79, 57, 59, 85, 87, 605, and 242 squadrons to battle. A series of air battles were fought with JG 1, 2, 26, 27 and 3. Messerschmitt Bf 110s from Zerstörergeschwader 26 (ZG 26), and bomber units LG 1, 2 and KG 27 were also involved.Over Belgium and France, the day was disastrous for the British: 27 Hurricanes were shot down.
On 12 May, as the German Army Group A advanced westward out of the Belgian Ardennes, Army Group B's 6th Army launched offensive thrusts towards Brussels.
To the Allies, the Belgian failure to hold onto its eastern frontiers was a disappointment (as they were thought to be capable of holding out for two weeks).The Allied Chiefs of Staff had sought to avoid an encounter mobile battle without any strong fixed defences to fall back on and hoped Belgian resistance would last long enough for a defensive line to be established.Nevertheless, a brief lull fell on the Dyle front on 11 May which enabled the Allied armies to get into position by the time the first major assault was launched the following day. Allied cavalry had moved into position and infantry and artillery were reaching the front more slowly, by rail. Although they were unaware of it, the First Allied Army Group and the Belgian Army outnumbered and outgunned Walther von Reichenau's German 6th Army.
On the morning of 12 May, in response to Belgian pressure and necessity, the Royal Air Force and the Armée de l'Air undertook several air attacks on the German-held Maastricht and Meuse bridges to prevent German forces flowing into Belgium. 74 sorties had been flown by the Allies since 10 May. On 12 May, eleven out of eighteen French Breguet 693 bombers were shot down. The RAF Advanced Air Striking Force, which included the largest Allied bomber force, was reduced to 72 aircraft out of 135 by 12 May. For the next 24 hours, missions were postponed as the German anti-aircraft and fighter defences were too strong.The results of the bombing are difficult to determine. The German XIX Corps war diary's situation summary at 20:00 on 14 May noted:
The completion of the military bridge at Donchery had not yet been carried out owing to heavy flanking artillery fire and long bombing attacks on the bridging point … Throughout the day all three divisions have had to endure constant air attack — especially at the crossing and bridging points. Our fighter cover is inadequate. Requests [for increased fighter protection] are still unsuccessful.
The Luftwaffe's operations includes a note of "vigorous enemy fighter activity through which our close reconnaissance in particular is severely impeded". Nevertheless, inadequate protection was given to cover RAF bombers against the strength of German opposition over the target area.In all, out of 109 Fairey Battles and Bristol Blenheims which had attacked enemy columns and communications in the Sedan area, 45 had been lost. On 15 May, daylight bombing was significantly reduced. Of 23 aircraft employed, four failed to return. Equally, owing to the Allied fighter presence, the German XIX Corps War Diary states, "Corps no longer has at its disposal its own long-range reconnaissance … [Reconnaissance squadrons] are no longer in a position to carry out vigorous, extensive reconnaissance, as, owing to casualties, more than half of their aircraft are not now available." On 13 May, in light of the withdrawal to the main defensive line, which was now being supported by the British and French Armies, King Leopold issued the following proclamation to improve morale after the defeats at the Albert Canal:
The Belgian Army, brutally assailed by an unparalleled surprise attack, grappling with forces that are better equipped and have the advantage of a formidable air force, has for three days carried out difficult operations, the success of which is of the utmost importance to the general conduct of the battle and to the result of war.
These operations require from all of us – officers and men – exceptional efforts, sustained day and night, despite a moral tension tested to its limits by the sight of the devastation wrought by a pitiless invader. However severe the trial may be, you will come through it gallantly.
Our position improves with every hour; our ranks are closing up. In the critical days that are ahead of us, you will summon up all your energies, you will make every sacrifice, to stem the invasion.
Just as they did in 1914 on the Yser, so now the French and British troops are counting on you: the safety and honour of the country are in your hands.
The French expected a major German thrust or thrusts to converge on the Gembloux gap. 30 kilometres (19 mi) beyond the line (east) to provide a screen for the move. The French 1st and 2nd Armoured Divisions were to be moved behind the French 1st Army to defend its main lines in depth. The Cavalry Corps was equal to a German Panzer Corps and was to occupy a screening line on the Tirlemont–Hannut–Huy axis. The operational plan called for the Corps to delay the German advance on Gembloux and Hannut until the main elements of the French 1st Army had reached Gembloux and dug in.This corridor was now the responsibility of the French 1st Army, with six elite divisions including the 2nd (2e Division Légère Mécanique, or 2e DLM) and 3rd Light Mechanized Divisions. The French Cavalry Corps, under the command of René Prioux, was to advance
On 12 May, Erich Hoepner XVI Panzerkorps – which had previously attacked out of the Maastricht bulge and defeated the Belgian defences at Liege, compelling the Belgian I Corps to retreat – launched an offensive at Hannut. The 3rd and 4th Panzer Divisions and Prioux's corps clashed head-on, on 12 May. Contrary to popular belief, the Germans did not outnumber the French.Frequently, figures of 623 German and 415 French tanks are given. In fact, the German 3rd and 4th Panzer Divisions numbered 280 and 343 tanks respectively. The 2e DLM and 3e DLM numbered 176 Somuas and 239 Hotchkiss H35s. Added to this force were the considerable number of Renault AMR-ZT-63s in the Cavalry Corps. The R35 was equal or superior to the Panzer I and Panzer IIs in armament terms. This applies all the more to the 90 Panhard 178 armoured cars of the French Army. Its 25mm main gun could penetrate the armour of the Panzer IV. In terms of tanks that were capable of engaging and surviving a tank-vs-tank action, the Germans possessed just 73 Panzer IIIs and 52 Panzer IVs. The French had 176 SOMUA and 239 Hotchkisses. German tank units also contained 486 Panzer I and IIs, which were of dubious combat value given their losses in the Polish Campaign.
The German forces were able to communicate by radio during the battle and they could shift the point of the main effort unexpectedly. The Germans also practiced combined arms tactics, while the French tactical deployment was a rigid and linear leftover from the First World War. French tanks did not possess radios and often the commanders had to dismount to issue orders.Despite the disadvantages experienced by the Germans in armour, they were able to gain the upper hand in the morning battle on 12 May, encircling several French battalions. The combat power of the French 2e DLM managed to defeat the German defences guarding the pockets and freeing the trapped units. Contrary to German reports, the French were victorious on that first day, preventing a Wehrmacht break-through to Gembloux or seizing Hannut. The result of the first day's battle was:
The effect on the German light tanks was catastrophic. Virtually every French weapon from 25mm upward penetrated the 7-13mm of the Panzer I. Although the Panzer II fared somewhat better, especially those that had been up-armoured since the Polish Campaign, their losses were high. Such was the sheer frustration of the crews of these light Panzers in [the] face of heavier armoured French machines that some resorted to desperate expedients. One account speaks of a German Panzer commander attempting to climb on a Hotchkiss H-35 with a hammer, presumably to smash the machine's periscopes, but falling off and being crushed by the tank's tracks. Certainly by day's end, Prioux had reason to claim that his tanks had come off best. The battlefield around Hannut was littered with knocked-out tanks–the bulk of which were German Panzers–with by far and away the bulk of them being Panzer Is and IIs.
The following day, 13 May, the French were undone by their poor tactical deployment. They strung their armour out in a thin line between Hannut and Huy, leaving no defence in depth, which was the point of sending the French armour to the Gembloux gap in the first place. This left Hoepner with a chance to mass against one of the French Light Divisions (3e DLM) and achieve a breakthrough in that sector. Moreover, with no reserves behind the front, the French denied themselves the chance of a counterattack. The victory saw the Panzer Corps out-manoeuvre 2e DLM on its left flank.The Belgian III Corps, retreating from Liege, offered to support the French front held by the 3e DLM. This offer was rejected.
2e DLM lost no AFVs, but 3e DLM lost 30 SOMUAs and 75 Hotchkisses. The French had disabled 160 German tanks.But as the poor linear deployment had allowed the Germans the chance of breaking through in one spot, the entire battlefield had to be abandoned, the Germans repaired nearly three quarters of their tanks; 49 were destroyed and 111 were repaired. They had 60 men killed and another 80 wounded. In terms of battlefield casualties, the Hannut battle had resulted in the French knocking-out 160 German tanks, losing 105 themselves.
Despite the failure by the Germans at Hannut, there was no way to rebuild a continuous Allied front. The French Cavalry Corps had achieved its mission and was withdrawn,
German units were also attacking towards Dinant, through the condroz (low hills) of the Province of Namur. Between 12 May and 15 May, Hoth's XV Panzerkorps attacked the French II and XI Corps – including many armoured units – along the Dinant-Flavion-Florennes corridor, in the Battle of Dinant (fr) and Battle of Flavion.
Meanwhile, Hoepner was pursuing Prioulx's units withdrawing from Hannut toward Gembloux. Being impatient, Hoepner did not wait for his infantry divisions to catch up. Instead, he hoped to continue pushing the French back and not give them time to construct a coherent defence line. German formations pursued the enemy to Gembloux. The Panzer Corps ran into retreating French columns and inflicted heavy losses on them. The pursuit created severe problems for the French artillery. The combat was so closely fought that there was an increasing danger of friendly fire incidents. Nevertheless, the French, setting up new anti-tank screens and Hoepner, lacking infantry support, caused the Germans to attack positions head-on.
Although suffering numerous tactical reverses, operationally the Germans diverted the Allied First Army Group from the lower Ardennes area. In the process his forces, along with the Luftwaffe depleted Prioux' Cavalry Corps. When news of the German breakthrough at Sedan reached Prioux, he withdrew from Gembloux. With the Gembloux gap breached, the German Panzer Corps, the 3rd and 4th Panzer Divisions, were no longer required by Army Group B and were handed over to Army Group A. Army Group B would continue its own offensive to force the collapse of the Meuse front. The Army Group was in a position to advance westward to Mons, outflank the BEF and Belgian Army protecting the Dyle–Brussels sector, or turn south to outflank the French 9th Army.
The German attempts to capture Gembloux on 14–15 May were repulsed.German losses had been heavy at Hannut and Gembloux that the two Panzer Divisions concerned were forced to slow their pursuit. The 4th Panzer Division was down to 137 tanks on 16 May, including just four Panzer IVs. The 3rd Panzer Division was down by 20–25 percent of its operational force, while the 4th Panzer Division 45–50 percent of its tanks were not combat ready. Damaged tanks were quickly repaired, but its strength was initially greatly weakened.
The French 1st Army had also taken a battering and despite winning several tactical defensive victories it was forced to retreat on 15 May owing to developments elsewhere, leaving its tanks on the battlefield, while the Germans were free to recover theirs.
In the central Namur area, the French V Corps, under René Altmayer, withdrew to defend the bridges on the Sambre at Charleroi, although the Belgian General Staff was not informed of this redeployment. Finding itself isolated in the Namur Fortified Position, the Belgian VII Corps abandoned it on 15 May.
On 16 and 17 May Reinhardt's XLI Korps attacked Charleroi, but was repulsed by the 5th North African Infantry Division.
On the morning of 15 May, German Army Group A broke the defences at Sedan and was now free to drive for the English Channel. The Allies considered a wholesale withdrawal from the Belgian trap. The withdrawal would reflect three stages: the night of 16/17 May to the River Senne, the night of 17/18 May to the river Dendre and the night of 18/19 May to the river Scheldt.The Belgians were reluctant to abandon Brussels and Leuven, especially as the Dyle line had withstood German pressure well. The Belgian Army, the BEF and the French 1st Army, in a domino effect, was ordered/forced to retire on 16 May to avoid their southern flanks from being turned by the German armoured forces advancing through the French Ardennes and the German 6th Army advancing through Gembloux. The Belgian Army was holding the German Fourteenth Army on the KW-line, along with the French 7th and British armies. Had it not been for the collapse of the French 2nd Army at Sedan, the Belgians were confident that they could have checked the German advance.
The situation called for the French and British to abandon the Antwerp–Namur line and strong positions in favour of improvised positions behind the Scheldt, without facing any real resistance.In the South, General Deffontaine of the Belgian VII Corps retreated from the Namur and Liège regions, the Liège fortress region put up stiff resistance to the German 6th Army. In the North, the 7th Army was diverted to Antwerp after the surrender of the Dutch on 15 May, but was then diverted to support the French 1st Army. In the centre, the Belgian Army and the BEF suffered little German pressure. On 15 May, the only sector to really be tested was around Leuven, which was held by the British 3rd Division. The BEF was not pursued vigorously to the Scheldt.
After the withdrawal of the French Army from the northern sector, the Belgians were left to guard the fortified city of Antwerp. Four infantry divisions (including the 13th and 17th Reserve Infantry Divisions) engaged the German Eighteenth Army's 208th, 225th and 526th Infantry Divisions.The Belgians successfully defended the northern part of the city, delaying the German infantry forces while starting to withdraw from Antwerp on 16 May. The city fell on 18/19 May after considerable Belgian resistance. On 18 May the Belgians received word that Namur's Fort Marchovelette had fallen; Suarlee fell on 19 May; St. Heribert and Malonne on 21 May; Dave, Maizeret and Andoy on 23 May.
Between 16 and 17 May, the British and French withdrew behind the Willebroek Canal, as the volume of Allied forces in Belgium fell and moved toward the German armoured thrust from the Ardennes. The Belgian I Corps and V Corps also retreated to what the Belgians called the Ghent bridgehead, behind the Dendre and Scheldt. The Belgian Artillery Corps and its infantry support defeated attacks by the Eighteenth Army's infantry and in a communiqué from London, the British recognized the "Belgian Army has contributed largely toward the success of the defensive battle now being fought.Nevertheless, the now-outnumbered Belgians abandoned Brussels and the Government fled to Ostend. The city was occupied by the German Army on 17 May. The very next morning, Hoepner, the German XVI Corps commander, was ordered to release the 3rd and 4th Panzer Divisions to Army Group A. This left the 9th Panzer Division attached to the Eighteenth Army as the only armoured unit on the Belgian front.
By 19 May, the Germans were hours away from reaching the French Channel coast. Gort had discovered the French had neither plan nor reserves and little hope for stopping the German thrust to the channel. He was concerned that the French 1st Army on its southern flank had been reduced to a disorganized mass of "fag-ends", fearing that German armour might appear on their right flank at Arras or Péronne, striking for the channel ports at Calais or Boulogne or north west into the British flank. Their position in Belgium massively compromised, the BEF considered abandoning Belgium and retreating to Ostend, Bruges or Dunkirk, the latter lying some 10 kilometres (6.2 mi) to 15 kilometres (9.3 mi) inside the French border.
The proposals of a British strategic withdrawal from the continent was rejected by the War Cabinet and the Chief of the Imperial General Staff (CIGS). They dispatched General Ironside to inform Gort of their decision and to order him to conduct an offensive to the south-west "through all opposition" to reach the "main French forces" in the south [the strongest French forces were actually in the north]. The Belgian Army was asked to conform to the plan, or should they choose, the British Royal Navy would evacuate what units they could. am on 20 May, the same day that continental communications between France and Belgium was cut. When Ironside made his proposals known to Gort, Gort replied such an attack was impossible. Seven of his nine divisions were engaged on the Scheldt and even if it was possible to withdraw them, it would create a gap between the Belgians and British which the enemy could exploit and encircle the former. The BEF had been marching and fighting for nine days and was now running short of ammunition. The main effort had to be made by the French to the south.The British cabinet decided that even if the "Somme offensive" was carried out successfully, some units may still need to be evacuated, and ordered Admiral Ramsay to assemble a large number of vessels. This was the beginning of Operation Dynamo. Ironside arrived at British General Headquarters at 06:00
The Belgian position on any offensive move was made clear by Leopold III. As far as he was concerned, the Belgian Army could not conduct offensive operations as it lacked tanks and aircraft; it existed solely for defence.The King also made clear that in the rapidly shrinking area of Belgium still free, there was only enough food for two weeks. Leopold did not expect the BEF to jeopardize its own position in order to keep contact with the Belgian Army, but he warned the British that if it persisted with the southern offensive the Belgians would be overstretched and their army would collapse. King Leopold suggested the best recourse was to establish a beach-head covering Dunkirk and the Belgian channel ports. The will of the CIGS won out. Gort committed just two infantry battalions and the only armoured battalion in the BEF to the attack, which despite some initial tactical success, failed to break the German defensive line at the Battle of Arras on 21 May.
In the aftermath of this failure, the Belgians were asked to fall back to the Yser river and protect the Allied left flank and rear areas. The King's aide, General Overstraten said that such a move could not be made and would lead to the Belgian Army disintegrating. Another plan for further offensives was suggested. The French requested the Belgians withdraw to the Leie and the British to the French frontier between Maulde and Halluin, the Belgians were then to extend their front to free further parts of the BEF for the attack. The French 1st Army would relieve two more divisions on the right flank. Leopold was reluctant to undertake such a move because it would abandon all but a small portion of Belgium. The Belgian Army was exhausted and it was an enormous technical task that would take too long to complete.
At this time, the Belgians and the British concluded that the French were beaten and the Allied Armies in the pocket on the Belgian–Franco border would be destroyed if action was not taken. The British, having lost confidence in their Allies, decided to look to the survival of the BEF.
The Belgian battle-front on the morning of 22 May extended some 90 kilometres (56 mi) from north to south, beginning with the Cavalry Corps, which checked its advance at Terneuzen. V, II, VI, VII and IV Corps (all Belgian) were drawn up side by side. Two further signal Corps were guarding the coast. These formations were then largely holding the eastern front as the BEF and French forces withdrew to the west to protect Dunkirk, which was vulnerable to German assault on 22 May. The eastern front remained intact, but the Belgians now occupied their last fortified position at Leie. The Belgian I Corps, with only two incomplete divisions, had been heavily engaged in the fighting and their line was wearing thin. On that day, Winston Churchill visited the front and pressed for the French and British Armies to break out from the north-east. He assumed that the Belgian Cavalry Corps could support the offensives' right flank. Churchill dispatched the following message to Gort:
1. That the Belgian Army should withdraw to the line of the Yser and stand there, the sluices being opened.
2. That the British Army and French 1st Army should attack south-west toward Bapaume and Cambrai at the earliest moment, certainly tomorrow, with about eight divisions, and with the Belgian Cavalry Corps on the right of the British.
Such an order ignored the fact that the Belgian Army could not withdraw to the Yser, and there was little chance of any Belgian Cavalry joining in the attack.The plan for the Belgian withdrawal was sound; the Yser river covered Dunkirk to the east and south, while the La Bassée Canal covered it from the west. The ring of the Yser also dramatically shorted the Belgian Army's area of operations. Such a move would have abandoned Passchendaele and Ypres and would have certainly meant the capture of Ostend while further reducing the amount of Belgian territory still free by a few square miles.
On 23 May, the French tried to conduct a series of offensives against the German defensive line on the Ardennes–Calais axis but failed to make any meaningful gains. Meanwhile, on the Belgian front, the Belgians, under pressure, retreated further, and the Germans captured Terneuzen and Ghent that day. The Belgians also had trouble moving the oil, food and ammunition that they had left.The Luftwaffe had air superiority and made everyday life hazardous in logistical terms. Air support could only be called in by "wireless" and the RAF was operating from bases in southern England which made communication more difficult. The French denied the use of the Dunkirk, Bourbourg and Gravelines bases to the Belgians, which had initially been placed at its disposal. The Belgians were forced to use the only harbours left to them, at Nieuport and Ostend.
Churchill and Maxime Weygand, who had taken over command from Gamelin, were still determined to break the German line and extricate their forces to the south. When they communicated their intentions to King Leopold and van Overstraten on 24 May, the latter was stunned.A dangerous gap was starting to open between the British and Belgians between Ypres and Menen, which threatened what remained of the Belgian front. The Belgians could not cover it; such a move would have overstretched them. Without consulting the French or asking permission from his government, Gort immediately and decisively ordered the British 5th and 50th Infantry Divisions to plug the gap and abandon any offensive operations further south.
On the afternoon of 24 May, von Bock had thrown four divisions, of Reichenau's 6th Army, against the Belgian IV Corps position at the Kortrijk area of the Leie during the Battle of the Lys (1940). The Germans managed, against fierce resistance, to cross the river at night and force a one-mile penetration along a 13-mile front between Wervik and Kortrijk. The Germans, with superior numbers and in command of the air, had won the bridgehead.Nevertheless, the Belgians had inflicted many casualties and several tactical defeats on the Germans. The 1st, 3rd, 9th and 10th Infantry Divisions, acting as reinforcements, had counterattacked several times and managed to capture 200 German prisoners. Belgian artillery and infantry were then heavily attacked by the Luftwaffe, which forced their defeat. The Belgians blamed the French and British for not providing air cover. The German bridgehead dangerously exposed the eastern flank of the southward stretched BEF's 4th Infantry Division. Montgomery dispatched several units of the 3rd Infantry Division (including the heavy infantry of the 1st and 7th Middlesex battalions and the 99th Battery, 20th Anti-Tank Regiment), as an improvised defence.
A critical point of the "Weygand Plan" and the British government and French Army's argument for a thrust south, was the withdrawal of forces to see the offensive through which had left the Belgian Army over-extended and was instrumental in its collapse. It was forced to cover the areas held by the BEF in order to enable the latter to engage in the offensive.Such a collapse could have resulted in the loss of the Channel ports behind the Allied front, leading to a complete strategic encirclement. The BEF could have done more to counterattack von Bock's left flank to relieve the Belgians as von Bock attacked across the fortified British position at Kortrijk. The Belgian High Command made at least five appeals for the British to attack the vulnerable left flank of the German divisions between the Scheldt and the Leie to avert disaster.
Admiral Sir Roger Keyes transmitted the following message to GHQ:
Van Overstraten is desperately keen for strong British counterattack. Either north or south of Leie could help restore the situation. Belgians expect to be attacked on the Ghent front tomorrow. Germans already have a bridgehead over canal west of Eecloo. There can be no question of the Belgian withdrawal to Yser. One battalion on march NE of Ypres was practically wiped out today in attack by sixty aircraft. Withdrawal over open roads without adequate fighter support very costly. Whole of their supplies are east of Yser. They strongly represent attempt should be made to restore the situation on Leie by British counter-attack for which opportunity may last another few hours only.
No such attack came. The Germans brought fresh reserves to cover the gap (Menen–Ypres). This nearly cut the Belgians off from the British. The 2nd, 6th and 10th Cavalry Divisions frustrated German attempts to exploit the gap in depth but the situation was still critical. 4 miles (6.4 km) from its centre on the morning of 27 May, bringing the port within artillery range.On 26 May, Operation Dynamo officially commenced, in which large French and British contingents were to be evacuated to the United Kingdom. By that time, the Royal Navy had already withdrawn 28,000 British non-fighting troops. Boulogne had fallen and Calais was about to, leaving Dunkirk, Ostend and Zeebrugge as the only viable ports which could be used for evacuation. The advance of the 14th German Army would not leave Ostend available for much longer. To the west, the German Army Group A had reached Dunkirk and were
The situation on 27 May had changed considerably from just 24 hours earlier. The Belgian Army had been forced from the Leie line on 26 May, and Nevele, Vynckt, Tielt and Iseghem had fallen on the western and central part of the Leie front. In the east, the Germans had reached the outskirts of Bruges, and captured Ursel. In the west, the Menen–Ypres line had broken at Kortrijk and the Belgians were now using railway trucks to help form anti-tank defences on a line from Ypres–Passchendaele–Roulers. Further to the west the BEF had been forced back, north of Lille just over the French border and was now in danger of allowing a gap to develop between themselves and the Belgian southern flank on the Ypres–Lille axis.The danger in allowing a German advance to Dunkirk would mean the loss of the port which was now too great. The British withdrew to the port on 26 May. In doing so, they left the French 1st Army's north-eastern flank near Lille exposed. As the British moved out, the Germans moved in, encircling the bulk of the French Army. Both Gort and his Chief of Staff, General Henry Pownall, accepted that their withdrawal would mean the destruction of the French 1st Army, and they would be blamed for it.
The fighting of 26–27 May had brought the Belgian Army to the brink of collapse. The Belgians still held the Ypres–Roulers line to the west, and the Bruges–Thelt line to the east. However, on 27 May, the central front collapsed in the Iseghem–Thelt sector. There was now nothing to prevent a German thrust to the east to take Ostend and Bruges, or west to take the ports at Nieuport or La Panne, deep in the Allied rear.The Belgians had practically exhausted all available means of resistance. The disintegration of the Belgian Army and its front caused many erroneous accusations by the British. In fact, on numerous occasions, the Belgians had held on after British withdrawals. One example was the taking over of the Scheldt line, where they relieved the British 4th Infantry Division, allowing it to retire through their ranks. Despite this, Gort and to a greater extent Pownall, showed anger at the Belgian King's decision to surrender on 28 May, considering it undercut the war effort. When it was inquired if any Belgians were to be evacuated, Pownall was reported to have replied, "We don't care a bugger what happens to the Belgians".
The Belgian Army was stretched from Cadzand south to Menen on the river Leie, and west, from Menin, to Bruges without any sort of reserves. With the exception of a few RAF sorties, the air was exclusively under the control of the Luftwaffe, and the Belgians reported attacks against all targets considered an objective, with resulting casualties. No natural obstacles remained between the Belgians and the German Army; retreat was not feasible. The Luftwaffe had destroyed most of the rail networks to Dunkirk, just three roads were left: Bruges–Torhout–Dixmude, Bruges–Ghistelles–Nieuport and Bruges–Ostend–Nieuport. Using such axes of retreat was impossible without losses owing to German air supremacy (as opposed to air superiority). Water supplies were damaged and cut off, gas and electricity supplies were also cut. Canals were drained and used as supply dumps for whatever ammunition and food-stuffs were left. The total remaining area covered just 1,700 km², and compacted military and civilians alike, of which the latter numbered some 3 million people. Under these circumstances Leopold deemed further resistance useless. On the evening of 27 May, he requested an armistice.
Churchill sent a message to Keyes the same day, and made clear what he thought of the request:
Belgian Embassy here assumes from King's decision to remain that he regards the war as lost and contemplates [a] separate peace. It is in order to dissociate itself from this that the constitutional Belgian Government has reassembled on foreign soil. Even if present Belgian Army has to lay down its arms, there are 200,000 Belgians of military age in France, and greater resources than Belgium had in 1914 which to fight back. By present decision the King is dividing the Nation and delivering it into Hitler's protection. Please convey these considerations to the King, and impress upon him the disastrous consequences to the Allies and to Belgium of his present choice.
The Royal Navy evacuated General Headquarters at Middelkerke and Sint-Andries, east of Bruges, during the night. Leopold III, and his mother Queen Mother Elisabeth, stayed in Belgium to endure five years of self-imposed captivity.In response to the advice of his government to set up a government-in-exile Leopold said, "I have decided to stay. The cause of the Allies is lost." The Belgian surrender came into effect at 04:00 on 28 May. Recriminations abounded with the British and French claiming the Belgians had betrayed the alliance. In Paris, the French Premier Paul Reynaud denounced Leopold's surrender, and the Belgian Premier Hubert Pierlot informed the people that Leopold had taken action against the unanimous advice of the government. As a result, the king was no longer in a position to govern and the Belgian government in exile that was located in Paris (later moved to London following the fall of France) would continue the struggle. The chief complaint was that the Belgians had not given any prior warning that their situation was so serious as to capitulate. Such claims were largely unjust. The Allies had known, and admitted it privately on 25 May through contact with the Belgians, that the latter were on the verge of collapse.
Churchill's and the British response was officially restrained. This was due to the strong-willed defence of the Belgian defensive campaign presented to the cabinet by Sir Roger Keyes at 11:30 am 28 May. The French and Belgian ministers had referred to Leopold's actions as treacherous, but they were unaware of the true events: Leopold had not signed an agreement with Hitler in order to form a collaborative government, but an unconditional surrender as Commander-in-Chief of the Belgian Armed Forces.
The casualty reports include total losses at this point in the campaign. The figures for the Battle of Belgium, 10–28 May 1940, cannot be known with any certainty.
Belgian casualties stood at:
Numbers for the Battle of Belgium are unknown, but the French suffered the following losses throughout the entire western campaign, 10 May – 22 June:
Numbers for the Battle of Belgium are unknown, but the British suffered the following losses throughout the entire campaign, 10 May – 22 June:
The consolidated report of the Oberkommando der Wehrmacht regarding the operations in the west from 10 May to 4 June (German: Zusammenfassender Bericht des Oberkommandos der Wehrmacht über die Operationen im Westen vom 10. Mai bis 4. Juni) reports:
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