Maginot Line

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Maginot Line
Ligne Maginot
Eastern France
Maginot line 1.jpg
Entrance to Ouvrage Schoenenbourg, Maginot Line in Alsace
TypeDefensive line
Site information
Controlled by French Army
Open to
the public
Only some sites
ConditionMostly intact, through the preservation of the French Government
Site history
Built by Paul Painlevé, Colonel Tricaud
  • Named after André Maginot (French Minister of War, late 1920s - early 1930s)
In use1935–1969
MaterialsConcrete, steel, iron
Battles/wars World War II

The Maginot Line (French : Ligne Maginot, IPA:  [liɲ maʒino] ), 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.

French language Romance language

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.

André Maginot French minister of war (1922 - 24; 1929 - 32)

André Maginot was a French civil servant, soldier, and Member of Parliament. He is best known for his advocacy of the string of forts known as the Maginot Line.

Fortification military constructions and buildings designed for defense in warfare and military bases

A fortification is a military construction or building designed for the defense of territories in warfare, and is also used to solidify rule in a region during peacetime. The term is derived from the Latin fortis ("strong") and facere.


Based on France's experience with trench warfare during World War I, the massive Maginot Line was built in the run-up to World War II, after the Locarno Conference gave rise to a fanciful and optimistic "Locarno spirit". French military experts extolled the Line as a work of genius that would deter German aggression, because it would slow an invasion force long enough for French forces to mobilise and counterattack.

Trench warfare type of land warfare

Trench warfare is a type of land warfare using occupied fighting lines consisting largely of military trenches, in which troops are well-protected from the enemy's small arms fire and are substantially sheltered from artillery. The most famous use of trench warfare is the Western Front in World War I. It has become a byword for stalemate, attrition, sieges, and futility in conflict.

World War I 1914–1918 global war originating in Europe

World War I, also known as the First World War or the Great War, was a global war originating in Europe that lasted from 28 July 1914 to 11 November 1918. Contemporaneously described as "the war to end all wars", it led to the mobilisation of more than 70 million military personnel, including 60 million Europeans, making it one of the largest wars in history. It is also one of the deadliest conflicts in history, with an estimated nine million combatants and seven million civilian deaths as a direct result of the war, while resulting genocides and the 1918 influenza pandemic caused another 50 to 100 million deaths worldwide.

World War II 1939–1945 global war

World War II, also known as the Second World War, was a global war that lasted from 1939 to 1945. The vast majority of the world's countries—including all the great powers—eventually formed two opposing military alliances: the Allies and the Axis. A state of total war emerged, directly involving more than 100 million people from over 30 countries. The major participants threw their entire economic, industrial, and scientific capabilities behind the war effort, blurring the distinction between civilian and military resources. World War II was the deadliest conflict in human history, marked by 50 to 85 million fatalities, most of whom were civilians in the Soviet Union and China. It included massacres, the genocide of the Holocaust, strategic bombing, premeditated death from starvation and disease, and the only use of nuclear weapons in war.

The Maginot Line was impervious to most forms of attack, including aerial bombings and tank fire, and had underground railways as a backup; it also had state-of-the-art living conditions for garrisoned troops, supplying air conditioning and eating areas for their comfort. [1] Instead of attacking directly, the Germans invaded through the Low Countries, bypassing the Line to the north. French and British officers had anticipated this: when Germany invaded the Netherlands and Belgium, they carried out plans to form an aggressive front that cut across Belgium and connected to the Maginot Line. However, the French line was weak near the Ardennes forest. Marshal Gamelin, when drafting the Dyle Plan, believed this region, with its rough terrain, would be an unlikely invasion route of German forces; if it were traversed, it would be done at a slow rate that would allow the French time to bring up reserves and counterattack. The German Army, having reformulated their plans from a repeat of the First World War-era plan, became aware of and exploited this weak point in the French defensive front. A rapid advance through the forest and across the River Meuse encircled much of the Allied forces, resulting in a sizeable force being evacuated at Dunkirk leaving the forces to the south unable to mount an effective resistance to the German invasion of France. [2]

Low Countries historical coastal landscape in north western Europe

The Low Countries, the Low Lands, or historically also the Netherlands, is a coastal lowland region in northwestern Europe, forming the lower basin of the Rhine, Meuse, and Scheldt rivers, divided in the Middle Ages into numerous semi-independent principalities that consolidated in the countries of Belgium, Luxembourg, and the Netherlands, as well as today's French Flanders.

French war planning 1920–1940

The Dyle Plan or Plan D was the plan of the Commander-in-Chief of the French Army, Général d'armée Maurice Gamelin to defeat a German attempt to invade France through Belgium. The Dyle (Dijle) river is 86 km (53 mi) long, from Houtain-le-Val through Flemish Brabant and Antwerp; Gamelin intended French, British and Belgian troops to halt a German invasion force along the line of the river. The Franco-Belgian Accord of 1920 had co-ordinated communication and fortification efforts of both armies. The Belgian government let the accord lapse after the German Remilitarization of the Rhineland on 7 March 1936, to adopt a policy of strict neutrality, with the German Army (Heer) on the Belgian border.

Dunkirk evacuation Successful evacuation of Allied forces from Dunkirk in May–June 1940

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 line has since become a metaphor for expensive efforts that offer a false sense of security. [3]


The Maginot Line was built to fulfil several purposes:

Alsace Place in Grand Est, France

Alsace is a cultural and historical region in eastern France, on the west bank of the upper Rhine next to Germany and Switzerland.

Planning and construction

The Maginot Line Maginot Line ln-en svg.svg
The Maginot Line

The defences were first proposed by Marshal Joseph Joffre. He was opposed by modernists such as Paul Reynaud and Charles de Gaulle, who favoured investment in armour and aircraft. Joffre had support from Marshal Henri Philippe Pétain, and there were a number of reports and commissions organised by the government. It was André Maginot who finally convinced the government to invest in the scheme. Maginot was another veteran of World War I; he became the French Minister of Veteran Affairs and then Minister of War (1928–1932).

Joseph Joffre French general who served as Commander-in-Chief of French forces on the Western Front from the start of World War I

Marshal Joseph Jacques Césaire Joffre, was a French general who served as Commander-in-Chief of French forces on the Western Front from the start of World War I until the end of 1916. He is best known for regrouping the retreating allied armies to defeat the Germans at the strategically decisive First Battle of the Marne in September 1914.

Paul Reynaud French politician and lawyer prominent in the interwar period

Paul Reynaud was a French politician and lawyer prominent in the interwar period, noted for his stances on economic liberalism and militant opposition to Germany.

Charles de Gaulle 17th President of the French Republic

Charles André Joseph Marie de Gaulle was a French army officer and statesman who led the French Resistance against Nazi Germany in World War II and chaired the Provisional Government of the French Republic from 1944 to 1946 in order to establish democracy in France. In 1958, he came out of retirement when appointed President of the Council of Ministers by President René Coty. He was asked to rewrite the Constitution of France and founded the Fifth Republic after approval by referendum. He was elected President of France later that year, a position he was reelected to in 1965 and held until his resignation in 1969. He was the dominant figure of France during the early part of the Cold War era, and his memory continues to influence French politics.

In January 1923, after Germany defaulted on reparations, the French Premier Raymond Poincaré responded by sending French troops to occupy Germany's Ruhr region. During the ensuing Ruhrkampf ("Ruhr struggle") between the Germans and the French that lasted until September 1923, Britain condemned the French occupation of the Ruhr, and a period of sustained Francophobia broke out in Britain, with Poincaré being vilified in Britain as a cruel bully punishing Germany with unreasonable reparations demands. The British—who openly championed the German position on reparations—applied intense economic pressure on France to change its policies towards Germany. At a conference in London in 1924 to settle the Franco-German crisis caused by the Ruhrkampf, the British Prime Minister Ramsay MacDonald successfully pressed the French Premier Édouard Herriot to make concessions to Germany. The British diplomat Sir Eric Phipps who attended the conference commented afterwards that:

The London Conference was for the French 'man in the street' one long Calvary as he saw M. Herriot abandoning one by one the cherished possessions of French preponderance on the Reparations Commission, the right of sanctions in the event of German default, the economic occupation of the Ruhr, the French-Belgian railroad Régie, and finally, the military occupation of the Ruhr within a year. [9]

The great conclusion that was drawn in Paris after the Ruhrkampf and the 1924 London conference was that France could not make unilateral military moves to uphold Versailles as the resulting British hostility to such moves was too dangerous to the republic. Beyond that, the French were well aware of the contribution of Britain and its Dominions to the victory of 1918, and French decision-makers believed that they needed Britain's help to win another war; the French could only go so far with alienating the British. [10] From 1871 onwards, French elites had concluded that France had no hope of defeating Germany on its own, and France would need an alliance with another great power to defeat the Reich. [11]

1927: Allied Control Commission abolished

In 1926, The Manchester Guardian ran an exposé showing the Reichswehr had been developing military technology forbidden by the Treaty of Versailles in the Soviet Union, and the secret German-Soviet co-operation had started in 1921. [12] The German statement following The Manchester Guardian's article that Germany did not feel bound by the terms of Versailles and would violate them as much as possible gave much offence in France. Nonetheless, in 1927, the Allied Control Commission, which was responsible for ensuring that Germany complied with Part V of the Treaty of Versailles, was abolished as a goodwill gesture reflecting the "Spirit of Locarno". [13] When the Control Commission was dissolved, the commissioners in their final report issued a blistering statement, stating that Germany had never sought to abide by Part V and the Reichswehr had been engaging in covert rearmament all through the 1920s. Under the Treaty of Versailles France was to occupy the Rhineland region of Germany until 1935, but in fact the last French troops left the Rhineland in June 1930 in exchange for Germany accepting the Young Plan. [14] As long as the Rhineland was occupied by the French, the Rhineland served as a type of collateral under which the French would annexe the Rhineland in the event of Germany breaching any of the articles of the treaty, such as rearming in violation of Part V; this threat was powerful enough to deter successive German governments all through the 1920s from attempting any overt violation of Part V. [15] French plans as developed by Marshal Ferdinand Foch in 1919 were based on the assumption that in the event of a war with the Reich, the French forces in the Rhineland were to embark upon an offensive to seize the Ruhr. [15] A variant of the Foch plan had been used by Poincaré in 1923 when he ordered the French occupation of the Ruhr. [15]

French plans for an offensive in the 1920s were realistic, as Versailles had forbidden Germany conscription, and the Reichswehr was limited to 100,000 men. Once the French forces left the Rhineland in 1930, this form of leverage with the Rhineland as collateral was no longer available to Paris, which from then on had to depend on Berlin's word that it would continue to abide by the terms of the Versailles and Locarno treaties, which stated that the Rhineland was to stay demilitarised forever. [15] Given that Germany had engaged in covert rearmament with the co-operation of the Soviet Union starting in 1921 (a fact that had become public knowledge in 1926) and that every German government had gone out of its way to insist on the moral invalidity of Versailles, claiming it was based upon the so-called Kriegsschuldlüge ("War guilt lie") that Germany started the war in 1914, the French had little faith that the Germans would willingly allow the Rhineland's demilitarised status to continue forever, and believed that at some time in the future Germany would rearm in violation of Versailles, reintroduce conscription and remilitarise the Rhineland. [15] The decision to build the Maginot Line in 1929 was a tacit French admission that without the Rhineland as collateral Germany was soon going to rearm, and that the terms of Part V had a limited lifespan. [15]

German economic superiority

After 1918, the German economy was three times as large as that of France; Germany had a population of 70 million compared to France's 40 million and the French economy was hobbled by the need to reconstruct the enormous damage of World War I, while German territory had seen little fighting. French military chiefs were dubious about their ability to win another war against Germany on its own, especially an offensive war. [15] French decision-makers knew that the victory of 1918 had been achieved because the British Empire and the United States were allies in the war and that the French would have been defeated on their own. [14] With the United States isolationist and Britain stoutly refusing to make the "continental commitment" to defend France on the same scale as in World War I, the prospects of Anglo-American assistance in another war with Germany appeared to be doubtful at best. [14] Versailles did not call for military sanctions in the event of Germany remilitarising the Rhineland or breaking Part V; while Locarno committed Britain and Italy to come to French aid in the event of a "flagrant violation" of the Rhineland's demilitarised status, without defining what a "flagrant violation" would be. [15] The British and Italian governments refused in subsequent diplomatic talks to define "flagrant violation", which led the French to place little hope in Anglo-Italian help if Germany should remilitarise the Rhineland. [15] Given the diplomatic situation in the late 1920s, the Quai d'Orsay informed the government that French military planning should be based on a worst-case scenario that France would fight the next war against Germany without the help of Britain or the United States. [15]

France had an alliance with Belgium and with the states of the Cordon sanitaire , as the French alliance system in Eastern Europe was known. Although the alliances with Belgium, Poland, Czechoslovakia, Romania and Yugoslavia were appreciated in Paris, it was widely understood that this was no compensation for the absence of Britain and the United States. The French military was especially insistent that the population disparity made an offensive war of manoeuvre and swift advances suicidal as there would always be far more German divisions; a defensive strategy was needed to counter Germany. [15] The French assumption was always that Germany would not go to war without conscription, which would allow the German Army to take advantage of the Reich's numerical superiority. Without the natural defensive barrier provided by the Rhine river, French generals argued that France needed a new defensive barrier made of concrete and steel to replace it. [15] The power of properly dug-in defensive trenches had been amply demonstrated during World War I, when a few soldiers manning a single machine gun post could kill hundreds of the enemy in the open and therefore building a massive defensive line with subterranean concrete shelters was the most rational use of French manpower. [16]

The American historian William Keylor wrote that given the diplomatic conditions of 1929 and likely trends-with the United States isolationist and Britain unwilling to make the "continental commitment"-the decision to build the Maginot Line was not irrational and stupid, as building the Maginot Line was a sensible response to the problems that would be created by the coming French withdrawal from the Rhineland in 1930. [16] Part of the rationale for the Maginot Line stemmed from the severe French losses during the First World War, and their effect on the French population. [17] The drop in the birth rate during and after the war, resulting in a national shortage of young men, created an "echo" effect in the generation that provided the French conscript army in the mid-1930s. [17] Faced with a manpower shortage, French planners had to rely more on older and less fit reservists, who would take longer to mobilise and would diminish French industry because they would leave their jobs. Static defensive positions were therefore intended not only to buy time but to economise on men by defending an area with fewer and less mobile forces. In 1940, France deployed about twice as many men, 36 divisions (roughly one third of its force), for the defence of the Maginot Line in Alsace and Lorraine, whereas the opposing German Army Group C only contained 19 divisions, fewer than a seventh of the force committed in the Manstein Plan for the invasion of France. [18] Reflecting memories of World War I, the French General Staff had developed the concept of la puissance du feu ("the power of fire"), the power of artillery dug in and sheltered by concrete and steel, to inflict devastating losses on an attacking force. [19]

War of long duration

The principal fortified section of the Maginot Line Maginot Linie Karte.jpg
The principal fortified section of the Maginot Line

French planning for war with Germany was always based on the assumption that the war would be la guerre de longue durée (the war of the long duration), in which the superior economic resources of the Allies would gradually grind the Germans down. [20] The fact that the Wehrmacht embraced the strategy of Blitzkrieg (Lightning War) with the vision of swift wars in which Germany would win quickly via a knock-out blow, was a testament to the fundamental soundness of the concept of la guerre de longue durée. [20] Germany had the largest economy in Europe but lacked many of the raw materials necessary for a modern industrial economy (making the Reich vulnerable to a blockade) and the ability to feed its population. The guerre de longue durée strategy called for the French to halt the expected German offensive meant to give the Reich a swift victory; afterwards, there would be an attrition struggle; once the Germans were exhausted France would begin an offensive to win the war. [20]

The Maginot Line was intended to block the main German blow, if it should come via eastern France, and to divert the main blow through Belgium, where French forces would meet and stop the Germans. [21] The Germans were expected to fight costly offensives, whose failures would sap the strength of the Reich, while the French waged a total war with the resources of France, its empire and allies mobilised for the war. [22] Besides the demographic reasons, a defensive strategy served the needs of French diplomacy towards Great Britain. [23] The French imported a third of their coal from Britain and 32 percent of all imports through French ports were carried by British ships. [23] Of French trade, 35 percent was with the British Empire and the majority of the tin, rubber, jute, wool and manganese used by France came from the British Empire. [23]

About 55 percent of overseas imports arrived in France via the Channel ports of Calais, Le Havre, Cherbourg, Boulogne, Dieppe, Saint-Malo and Dunkirk. [23] Germany had to import most of its iron, rubber, oil, bauxite, copper and nickel, making naval blockade a devastating weapon against the German economy. [24] For economic reasons, the success of the strategy of la guerre de longue durée would at very least require Britain to maintain a benevolent neutrality, preferably to enter the war as an ally as British sea power could protect French imports while depriving Germany of hers. A defensive strategy based on the Maginot Line was an excellent way of demonstrating to Britain that France was not an aggressive power and would only go to war in the event of German aggression, a situation that would make it more likely that Britain would enter the war on France's side. [25]

The line was built in several phases from 1930 by the Service Technique du Génie (STG) overseen by Commission d'Organisation des Régions Fortifiées (CORF). The main construction was largely completed by 1939, at a cost of around 3 billion French francs.[ clarification needed ] The line stretched from Switzerland to Luxembourg and a much lighter extension was extended to the Strait of Dover after 1934. The original construction did not cover the area ultimately chosen by the Germans for their first challenge, which was through the Ardennes in 1940, a plan known as Fall Gelb (Case Yellow), due to the neutrality of Belgium. The location of this attack, chosen because of the location of the Maginot Line, was through the Belgian Ardennes forest (sector 4), which is off the map to the left of Maginot Line sector 6 (as marked).


Maginot Line fortifications were manned by specialist units of fortress infantry, artillery and engineers. The infantry manned the lighter weapons of the fortresses, and formed units with the mission of operating outside if necessary. Artillery troops operated the heavy guns and the engineers were responsible for maintaining and operating other specialist equipment, including all communications systems. All these troops wore distinctive uniform insignia and considered themselves among the elite of the French Army. During peacetime, fortresses were only partly manned by full-time troops. They would be supplemented by reservists who lived in the local area, and who could be quickly mobilised in an emergency. [26]

Full-time Maginot Line troops were accommodated in barracks built close by the fortresses. They were also accommodated in complexes of wooden housing adjacent to each fortresses, which were more comfortable than living inside, but which were not expected to survive wartime bombardment. [27]

Training was carried out at a fortress near the town of Bitche, built in a military training area and so capable of live fire exercises. This was impossible elsewhere as the other parts of the line were located in civilian areas. [27]


Block 14 at Ouvrage Hochwald in 1940 Hochwald historic photo.jpg
Block 14 at Ouvrage Hochwald in 1940
Side view diagram of the operation of a retractable turret: 75 mm gun of block 3 in Ouvrage Schoenenbourg Manoeuvre tourelle.gif
Side view diagram of the operation of a retractable turret: 75 mm gun of block 3 in Ouvrage Schoenenbourg
Casemate of Dambach Nord, Fortified Sector of the Vosges, Sub-sector of Philippsbourg Casematedambachnord.jpg
Casemate of Dambach Nord, Fortified Sector of the Vosges, Sub-sector of Philippsbourg
Layout of Ouvrage Hackenberg, one of the largest fortress complexes Ouvrage Hackenberg carte.png
Layout of Ouvrage Hackenberg, one of the largest fortress complexes

Although the name "Maginot Line" suggests a rather thin linear fortification, it was quite deep, varying (from the German border to the rear area) from 20–25 kilometre s (12–16 mile s). It was composed of an intricate system of strong points, fortifications and military facilities such as border guard posts, communications centres, infantry shelters, barricades, artillery, machine gun and anti-tank gun emplacements, supply depots, infrastructure facilities and observation posts. These various structures reinforced a principal line of resistance made up of the most heavily armed ouvrages, which can be roughly translated as fortresses or big defensive works.

From front to rear, (east to west) the line was composed of:

1. Border Post line: This consisted of blockhouses and strong houses, which were often camouflaged as inoffensive residential homes, built within a few metres of the border and manned by troops so as to give the alarm in the event of a surprise attack and to delay enemy tanks with prepared explosives and barricades.

2. Outpost and Support Point line: Approximately 5 km (3 mi) behind the border, a line of anti-tank blockhouses that were intended to provide resistance to armoured assault, sufficient to delay the enemy so as to allow the crews of the C.O.R.F. ouvrages to be ready at their battle stations. These outposts covered the main passages within the principal line.

3. Principal line of resistance: This line began 10 km (6 mi) behind the border. It was preceded by anti-tank obstacles made of metal rails planted vertically in six rows, with heights varying from 0.70–1.40 metre s (2  ft 4  in –4 ft 7 in) and buried to a depth of 2 m (6 ft 7 in). These anti-tank obstacles extended from end to end in front of the main works, over hundreds of kilometres, interrupted only by extremely dense forests, rivers, or other nearly impassable terrain.

The anti-tank obstacle system was followed by an anti-personnel obstacle system made primarily of dense barbed wire. Anti-tank road barriers also made it possible to block roads at necessary points of passage through the tank obstacles.

4. Infantry Casemates: These bunkers were armed with twin machine-guns (abbreviated as JMJumelage de mitrailleuses — in French) and anti-tank guns of 37 or 47 mm (1.5 or 1.9 in). They could be single (with a firing room in one direction) or double (two firing rooms, in opposite directions). These generally had two floors, with a firing level and a support/infrastructure level that provided the troops with rest and services (power generating units, reserves of water, fuel, food, ventilation equipment, etc.). The infantry casemates often had one or two "cloches" or turrets located on top of them. These GFM cloches were sometimes used to emplace machine guns or observation periscopes. They were manned by 20 to 30 men.

5. Petits ouvrages: These small fortresses reinforced the line of infantry bunkers. The petits ouvrages were generally made up of several infantry bunkers, connected by a tunnel network with attached underground facilities, such as barracks, electric generators, ventilation systems, mess halls, infirmaries and supply caches. Their crew consisted of between 100 and 200 men.

6. Gros Ouvrages: These fortresses were the most important fortifications on the Maginot Line, having the sturdiest construction and the heaviest artillery. These were composed of at least six "forward bunker systems" or "combat blocks", as well as two entrances, and were connected via a network of tunnels that often featured narrow gauge electric railways for transport between bunker systems. The blocks contained infrastructure such as power stations, independent ventilating systems, barracks and mess halls, kitchens, water storage and distribution systems, hoists, ammunition stores, workshops and stores of spare parts and food. Their crews ranged from 500 to more than 1,000 men.

Blockhouse MOM (Main d'Oeuvre Militaire) de Richtolsheim - Secteur Fortifie de Colmar - Sous secteur de Hilsenheim Blockhousemomderichtolsheim.jpg
Blockhouse MOM (Main d'Oeuvre Militaire) de Richtolsheim – Secteur Fortifié de Colmar – Sous secteur de Hilsenheim

7. Observation Posts were located on hills that provided a good view of the surrounding area. Their purpose was to locate the enemy and direct and correct the indirect fire of artillery as well as to report on the progress and position of key enemy units. These are large reinforced buried concrete bunkers, equipped with armoured turrets containing high-precision optics, connected with the other fortifications by field telephone and wireless transmitters (known in French by the acronym T.S.F., Télégraphie Sans Fil).

8. Telephone Network: This system connected every fortification in the Maginot Line, including bunkers, infantry and artillery fortresses, observation posts and shelters. Two telephone wires were placed parallel to the line of fortifications, providing redundancy in the event of a wire getting cut. There were places along the cable where dismounted soldiers could connect to the network.

9. Infantry Reserve Shelters: These were found from 500–1,000 m (1,600–3,300 ft) behind the principal line of resistance. These were buried concrete bunkers designed to house and shelter up to a company of infantry (200 to 250 men) and had such features as electric generators, ventilation systems, water supplies, kitchens and heating, which allowed their occupants to hold out in the event of an attack. They could also be used as a local headquarters and as a base for counter-attacks.

Anti-tank rails around casemate 9 of the Hochwald ditch Antitankrails.jpg
Anti-tank rails around casemate 9 of the Hochwald ditch

10. Flood Zones were natural basins or rivers that could be flooded on demand and thus constitute an additional obstacle in the event of an enemy offensive.

11. Safety Quarters were built near the major fortifications so fortress (ouvrage) crews could reach their battle stations in the shortest possible time in the event of a surprise attack during peacetime.

12. Supply depots.

13. Ammunition dumps.

14. Narrow Gauge Railway System: A network of 600 mm (1 ft 11 58 in) narrow gauge railways was built so as to rearm and resupply the main fortresses (ouvrages) from supply depots up to 50 km (31 mi) away. Petrol-engined armoured locomotives pulled supply trains along these narrow-gauge lines. (A similar system was developed with armoured steam engines back in 1914–1918.)

15. High-voltage Transmission Lines, initially above-ground but then buried, and connected to the civil power grid, provided electric power to the many fortifications and fortresses.

16. Heavy rail artillery was hauled in by locomotives to planned locations to support the emplaced artillery located in the fortresses, which was intentionally limited in range to 10–12 km (6–7 mi).



There are 142 ouvrages, 352 casemates, 78 shelters, 17 observatories and around 5,000 blockhouses in the Maginot Line. [lower-alpha 1]

Armoured cloches

There are several kinds of armoured cloches. The word cloche is a French term meaning bell due to its shape. All cloches were made in an alloy steel. Cloches are non-retractable turrets.

Retractable turrets

The line included the following retractable turrets.


Both static and mobile artillery units were assigned to defend the Maginot Line. Régiments d’ artillerie de position (RAP) consisted of static artillery units. Régiments d’ artillerie mobile de forteresse (RAMF) consisted of mobile artillery. [28]

Anti-tank guns


81 mm (3.2 in) mortar Fort Saint-Gobain p1410129.jpg
81 mm (3.2 in) mortar

The specification of the defences was very high, with extensive and interconnected bunker complexes for thousands of men; there were 45 main forts (grands ouvrages) at intervals of 15 km (9.3 mi), 97 smaller forts (petits ouvrages) and 352 casemates between, with over 100 km (62 mi) of tunnels. Artillery was coordinated with protective measures to ensure that one fort could support the next in line by bombarding it directly without harm. The largest guns were therefore 135 mm (5.3 in) fortress guns; larger weapons were to be part of the mobile forces and were to be deployed behind the lines.

The fortifications did not extend through the Ardennes Forest (which was believed to be impenetrable by Commander-in-Chief Maurice Gamelin) or along France's border with Belgium, because the two countries had signed an alliance in 1920, by which the French army would operate in Belgium if the German forces invaded. However, after France had failed to counter Germany's remilitarisation of the Rhineland, Belgium—thinking that France was not a reliable ally—abrogated the treaty in 1936 and declared neutrality. France quickly extended the Maginot Line along the Franco-Belgian border, but not to the standard of the rest of the line. As the water table in this region is high, there was the danger of underground passages getting flooded, which the designers of the line knew would be difficult and expensive to overcome.

In 1939 US Army officer Kenneth Nichols visited the Metz sector, where he was impressed by the formidable formations which he thought the Germans would have to outflank by driving through Belgium. In discussion with General Brousseau the commander of the Metz sector and other officers, the general outlined the French problem in extending the line to the sea in that placing the line along the Belgian-German border required the agreement of Belgium, but putting the line along the French-Belgian border relinquished Belgium to the Germans. Another complication was Holland, and the various governments never resolved their problems. [29]

Corridor inside the Fort Saint-Gobain near Modane in the Alps. The Decauville Fort Saint-Gobain p1410059.jpg
Corridor inside the Fort Saint-Gobain near Modane in the Alps. The Decauville

When the British Expeditionary Force landed in France in September 1939, they and the French reinforced and extended the Maginot line to the sea in a flurry of construction from 1939–1940 accompanied by general improvements all along the line. The final line was strongest around the industrial regions of Metz, Lauter and Alsace, while other areas were in comparison only weakly guarded. In contrast, the propaganda about the line made it appear far greater a construction than it was; illustrations showed multiple storeys of interwoven passages and even underground railyards and cinemas. This reassured Allied civilians.

Czechoslovak connection

Czechoslovakia was also in fear of Hitler and began building its own defences. As an ally of France, they were able to get advice on the Maginot design and apply it to Czechoslovak border fortifications. The design of the casemates is similar to the ones found in the southern part of the Maginot Line and photographs of them are often confused with Maginot forts. Following the Munich Agreement and the German occupation of Czechoslovakia, the Germans were able to use the Czech fortifications to plan attacks that proved successful against the western fortifications (the Belgian Fort Eben-Emael is the best known example).

German invasion in World War II

Combat block 1 at the fortress Limeiln (ouvrage Four-a-Chaux, Alsace), showing signs of German testing of explosives inside some fortresses between 1942 and 1944 Ligne Maginot - Four a Chaux (Alsace) bloc 1.jpg
Combat block 1 at the fortress Limeiln (ouvrage Four-à-Chaux, Alsace), showing signs of German testing of explosives inside some fortresses between 1942 and 1944

The World War II German invasion plan of 1940 (Sichelschnitt) was designed to deal with the line. A decoy force sat opposite the line while a second Army Group cut through the Low Countries of Belgium and the Netherlands, as well as through the Ardennes Forest, which lay north of the main French defences. Thus the Germans were able to avoid a direct assault on the Maginot Line by violating the neutrality of Belgium, Luxembourg and the Netherlands. Attacking on 10 May, German forces were well into France within five days and they continued to advance until 24 May, when they stopped near Dunkirk.

During the advance to the English Channel, the Germans overran France's border defence with Belgium and several Maginot Forts in the Maubeuge area, whilst the Luftwaffe simply flew over it. On 19 May, the German 16th Army captured the isolated petit ouvrage La Ferté (southeast of Sedan) after conducting a deliberate assault by combat engineers backed up by heavy artillery, taking the fortifications in only four days [30] . The entire French crew of 107 soldiers was killed during the action. On 14 June 1940, the day Paris fell, the German 1st Army went over to the offensive in "Operation Tiger" and attacked the Maginot Line between St. Avold and Saarbrücken. The Germans then broke through the fortification line as defending French forces retreated southward. In the following days, infantry divisions of the 1st Army attacked fortifications on each side of the penetration; capturing four petits ouvrages. The 1st Army also conducted two attacks against the Maginot Line further to the east in northern Alsace. One attack broke through a weak section of the line in the Vosges Mountains, but a second attack was stopped by the French defenders near Wissembourg. On 15 June, infantry divisions of the German 7th Army attacked across the Rhine River in Operation "Small Bear", penetrating the defences deep and capturing the cities of Colmar and Strasbourg.

By early June the German forces had cut off the line from the rest of France and the French government was making overtures for an armistice, which was signed on 22 June in Compiègne. As the line was surrounded, the German Army attacked a few ouvrages from the rear, but were unsuccessful in capturing any significant fortifications. The main fortifications of the line were still mostly intact, a number of commanders were prepared to hold out, and the Italian advance had been contained. Nevertheless, Maxime Weygand signed the surrender instrument and the army was ordered out of their fortifications, to be taken to POW camps.

When the Allied forces invaded in June 1944, the line, now held by German defenders, was again largely bypassed; fighting touched only portions of the fortifications near Metz and in northern Alsace towards the end of 1944. During the German offensive Operation Nordwind in January 1945, Maginot Line casemates and fortifications were utilised by Allied forces, especially in the region of Hatten-Rittershoffen, and some German units had been supplemented with flamethrower tanks in anticipation of this possibility. [31] Stephen Ambrose wrote that in January 1945 "a part of the line was used for the purpose it had been designed for and showed what a superb fortification it was." Here the Line ran east-west, around the villages of Rittershoffen and Hatten, south of Wissembourg. [32]

After World War II

The view from a battery at Ouvrage Schoenenbourg in Alsace. A retractable turret is in the left foreground. Maginot line 2.jpg
The view from a battery at Ouvrage Schoenenbourg in Alsace. A retractable turret is in the left foreground.

After the war the line was re-manned by the French and underwent some modifications. With the rise of the French independent nuclear weapons by 1960 the line became an expensive anachronism. Some of the larger ouvrages were converted to command centres. When France withdrew from NATO's military component (in 1966) much of the line was abandoned, with the NATO facilities turned back over to French forces and the rest of it auctioned-off to the public or left to decay. [33] A number of old fortifications have now been turned into wine cellars, a mushroom farm and even a disco. Besides that, a few private houses are built atop some of the blockhouses. [34]

The view of the village of Lembach in Alsace (north-east), taken from the combat unit number 5 of the fortress ouvrage Four-a-Chaux Ligne Maginot - Four a Chaux (Alsace) bloc 5.jpg
The view of the village of Lembach in Alsace (north-east), taken from the combat unit number 5 of the fortress ouvrage Four-à-Chaux

Ouvrage Rochonvillers was retained by the French Army as a command centre into the 1990s, but was deactivated following the disappearance of the Soviet threat. Ouvrage Hochwald is the only facility in the main line that remains in active service, as a hardened command facility for the French Air Force known as Drachenbronn Air Base.

In 1968 when scouting locations for On Her Majesty's Secret Service , producer Harry Saltzman used his French contacts to gain permission to use portions of the Maginot Line as SPECTRE headquarters in the film. Saltzman provided art director Syd Cain with a tour of the complex, but Cain said that not only would the location be difficult to light and film inside, but that artificial sets could be constructed at the studios for a fraction of the cost. [35] The idea was shelved.

Post-war assessment

In analysing the Maginot Line, Ariel Ilan Roth summarised its main purpose: it was not "as popular myth would later have it, to make France invulnerable", rather it was constructed "to make the appeal of flanking [the fortifications] far outweigh the appeal of attacking them head on." [4] J.E. Kaufmann and H.W. Kaufmann added to this, that prior to construction in October 1927, the Superior Council of War adopted the final design for the line and identified that one of the main missions would be to deter a German cross-border assault with only minimal force thus allowing "the army time to mobilize." [36] In addition, the French envisioned that the Germans would conduct a repeat of their First World War battleplan in order to flank the defences and drew up their overall strategy with that in mind. [37] [38] Julian Jackson highlighted one of the line's roles was to facilitate this strategy by "free[ing] manpower for offensive operations elsewhere ... and to protect the forces of manoeuvre"; the latter included a more mechanised and modernised military, which would advance into Belgium and engage the German main thrust flanking the line. [37] In support, Roth commented that French strategy envisioned one of two possibilities by advancing into Belgium: "either there would be a decisive battle in which France might win, or, more likely, a front would develop and stabilize". The latter meant the next war's destructive consequences would not take place on French soil. [4]

Post-war assessment of whether the Maginot Line served its purpose has been mixed. Due to its enormous cost, and its failure to prevent German forces from invading France, journalists and political commentators remain divided on whether the line was worthwhile. [39] [40] Historian Clayton Donnell commented "If one believes the Maginot Line was built for the primary purpose of stopping a German invasion of France, most will consider it a massive failure and a waste of money ... in reality, the line was not built to be the ultimate savior of France". [41] Donnell argued that the primary purpose of "prevent[ing] a concerted attack on France through the traditional invasion routes and to permit time for the mobilization of troops ... was fulfilled" as was the French strategy of forcing the Germans to enter Belgium, which ideally would have allowed "the French to fight on favorable terrain". However, he noted that the French failed to use the line as the basis for an offensive. [42] Marc Romanych and Martin Rupp highlight that "poor decisions and missed opportunities" plagued the line, and point to its purpose of conserving manpower: "about 20 per cent of [France's] field divisions remained inactive along the Maginot Line", while Belgium was overrun and British and French forces evacuated at Dunkirk. They argue had these troops been moved north "it is possible that Heeresgruppe A's advance could have been blunted, giving time for Groupe d'armees 1 to reorganize". [43] Kaufmann and Kaufmann commented "When all is said and done, the Maginot Line did not fail to accomplish its original mission ... it provided a shield that bought time for the army to mobilize ... [and] concentrate its best troops along the Belgian border to engage the enemy." [44]

The psychological factor of the Maginot Line has also been discussed. Its construction created a false sense of security, which was widely believed by the French population. [41] Kaufmann and Kaufmann comment that this was an unintended consequence of André Maginot's efforts to "focus the public's attention on the work being done, emphasizing the role and nature of the line". This resulted in "the media exaggerat[ing] his descriptions, turning the line into an impregnable fortified position that would seal the frontier". This false sense of security contributed "to the development of the "Maginot mentality"". [45]

Jackson commented that "it has often been alleged that the Maginot Line contributed to France's defeat by making the military too complacent and defence-minded. Such accusations are unfounded." [46] Historians have pointed to numerous reasons for the French defeat: faulty strategy and doctrine, dispersion of forces, the loss of command and control, poor communications, faulty intelligence that provided exaggerated German numbers, the slow nature of the French response to the German penetration of the Ardennes, and a failure to understand the nature and speed of the German doctrine. [47] [48] More seriously, historians have noted rather than the Germans doing what the French had envisioned, the French played into the Germans' hand, culminating in their defeat. [49] [42]

When the French Army failed in Belgium, the Maginot Line covered their retreat. [44] Romanych and Rupp indicate that, with the exception of the loss of several insignificant fortifications due to insufficient defending troops, the actual fortifications and troops "withstood the test of battle", repulsed numerous attacks, and "withstood intense aerial and artillery bombardment." [50] Kaufmann and Kaufmann point to the Maginot Line along the Italian border, which "demonstrated the effectiveness of the fortifications ... when properly employed." [51]

See also



  1. There are 58 ouvrages, 311 casemates, 78 shelters, 14 observatories and around 4,000 blockhouses on the North-West and 84 ouvrages, 41 casemates, three observatories and around 1,000 blockhouses to the South-West.


  1. Gravett 2007, p. 187.
  2. Chelminski 1997, pp. 90–100.
  3. "Maginot Line (definition)". Retrieved 2 January 2019. a defensive barrier or strategy that inspires a false sense of security
  4. 1 2 3 4 Roth 2010, p. 6.
  5. Kaufmann & Kaufmann 2006, Introduction.
  6. Kaufmann & Kaufmann 2006, p. 5.
  7. Kaufmann & Kaufmann 2006, p. 122.
  8. Romanych & Rupp 2010, p. 8.
  9. Marks 1978, p. 249.
  10. Young 2005, p. 20.
  11. Smith, Audoin-Rouzeau & Becker 2003, p. 11.
  12. Jacobsen 1994, p. 214.
  13. Keylor 2001, p. 121.
  14. 1 2 3 Keylor 2001, pp. 121-122.
  15. 1 2 3 4 5 6 7 8 9 10 11 12 Keylor 2001, p. 122.
  16. 1 2 Keylor 2001, p. 123.
  17. 1 2 Young 2005, p. 13.
  18. Frieser 2005, p. 88.
  19. Young 2005, p. 36.
  20. 1 2 3 Young 2005, p. 35.
  21. Young 2005, pp. 35-36.
  22. Young 2005, p. 37.
  23. 1 2 3 4 Young 2005, p. 40.
  24. Young 2005, p. 33.
  25. Young 2005, pp. 40-41.
  26. Allcorn 2003, p. 43.
  27. 1 2 Allcorn 2003, p. 44.
  28. Romanych & Rupp 2010, p. 19.
  29. Nichols 1987, p. 27.
  30. Maginot Line, The History Channel
  31. Zaloga 2010, p. ??.
  32. Ambrose 2016, p. 386.
  33. Seramour 2007, pp. 86-97.
  34. Chelminski 1997, abstract.
  35. Cain 2005, p. ??.
  36. Kaufmann & Kaufmann 2006, p. 14.
  37. 1 2 Jackson 2003, pp. 26-27.
  38. Kaufmann & Kaufmann 2006, pp. 4, 85-86, 88.
  39. Haynes, Gavin (25 October 2017). "What's the stupidest thing a nation has ever done?". Retrieved 25 October 2017.
  40. "Opinion - The difficult truths behind 'Dunkirk'". The Washington Post . Retrieved 25 October 2017.
  41. 1 2 Donnell 2017, p. 4.
  42. 1 2 Donnell 2017, p. 45.
  43. Romanych & Rupp 2010, p. 91.
  44. 1 2 Kaufmann & Kaufmann 2006, p. 182.
  45. Kaufmann & Kaufmann 2006, p. 15.
  46. Jackson 2003, p. 27.
  47. Kaufmann & Kaufmann 2006, pp. 153, 157, 160.
  48. Jackson 2003, p. 221.
  49. Roth 2010, p. 7.
  50. Romanych & Rupp 2010, pp. 91-92.
  51. Kaufmann & Kaufmann 2006, p. 180.

Related Research Articles

Ouvrage Schoenenbourg Maginot Line fortification in France

Ouvrage Schoenenbourg is a Maginot Line fortification. It is located on the territory of the communes of Hunspach, Schœnenbourg and Ingolsheim, in the French département of Bas-Rhin, forming part of the Fortified Sector of Haguenau, facing Germany. At the east end of the Alsace portion of the Maginot Line, its neighbour is the gros ouvrage Hochwald. It is the largest such fortification open to the public in Alsace. Officially recorded as an historical monument, it retains all its original structural elements. Schoenenbourg was heavily bombarded during the Battle of France in 1940, receiving more enemy ordnance than any other position in France, with no significant damage. In 1945, retreating German troops used explosives to destroy much of the ouvrage. After the war it was fully repaired and placed back into service as part of a programme to use Maginot fortifications to resist a potential Warsaw Pact advance through Europe. By the 1970s the plan had lost favour and funding, and Schoenenboug was abandoned. In 1987 a local organisation undertook Schoenenbourg's preservation, and today it is open to public visitation.

Ouvrage Latiremont

Ouvrage Latiremont is a gros ouvrage of the Maginot Line, located in the Fortified Sector of the Crusnes, sub-sector of Arrancy. It lies between the gros ouvrage Fermont and the petit ouvrage Mauvais Bois, facing Belgium. The village of Doncourt-Cités is nearby. Latiremont was active in 1939-1940, coming under direct attack in late June 1940. It surrendered to German forces on 27 June. After renovations during the Cold War, it was abandoned.

Ouvrage Hackenberg military museum

Ouvrage Hackenberg, one of the largest of the Maginot Line fortifications, is part of the Fortified Sector of Boulay. It is situated twenty kilometers east of Thionville, in the Moselle département, near the village of Veckring, on the Hackenberg. It is located between gros ouvrage Billig and petit ouvrage Coucou, facing Germany. The fort occupies the wooded Hackenberg ridge. Before World War II it was considered a showpiece of French fortification technology, and was visited by British King George VI. In 1940 Hackenberg was never directly attacked, providing covering fire to neighboring positions and harassing nearby German forces. Its garrison was one of the last French units to surrender after the June 1940 armistice. In 1944, under German occupation, it was in action against American forces advancing along the Maginot Line. It resisted for three days before artillery bombardment from the rear forced the Germans to evacuate. Following World War II it became part of a strongpoint meant to delay a potential advance by Soviet forces into northeastern France. Hackenberg has been preserved and operates as a museum.

Ouvrage Mont des Welches

Ouvrage Mont des Welches, a gros ouvrage of the Maginot Line fortifications, is part of the Fortified Sector of Boulay. It comprises two entrance blocks, one infantry block, one artillery block, one observation block and two combination blocks. It is located between petit ouvrage Coucou and gros ouvrage Michelsberg, facing Germany. Relatively small for a gros ouvrage, Mont des Welches saw a brief period of sharp action in June 1940, when German forces moving along the rear of the Maginot Line engaged the position without success. After modest renovations in the 1950s, Mont des Welches was abandoned in the 1970s.

Ouvrage Michelsberg

Ouvrage Michelsberg, one of the Maginot Line fortifications, formed part of the Fortified Sector of Boulay as well as the fortified region of Metz. The ouvrage is located in Moselle (département) between the towns of Dalstein and d'Ebersviller, about 23 km from Thionville. It is located between gros ouvrage Mont des Welches and petit ouvrage Hobling, facing Germany. Michelsberg did not see significant action in the Battle of France until June 1940, when it was attacked from the rear by German forces that had bypassed the Maginot Line. It successfully resisted these attacks, but was compelled to surrender in accordance with the 25 June 1940 armistice. After the Second World War it was renovated as a Cold War fortification against a potential Soviet invasion, then abandoned. It is now operated as a museum, and may be visited.

Ouvrage Kerfent

Ouvrage Kerfent is a lesser work of the Maginot Line. Located in the Fortified Sector of Faulquemont, the ouvrage consists of three infantry blocks and an observation block, and is located between petits ouvrages Mottemberg and Bambesch, facing Germany. During the Battle of France, Kerfent was attacked by German forces, who captured the position from the rear after a short assault with artillery support. The combat blocks were heavily damaged. During the Cold War, limited repairs were made to allow the underground facilities to be occupied. Between 1958 and 1961 the site was used by the Royal Canadian Air Force as a microwave communications relay station. In the 1970s the ouvrage was sold to the commune of Zimming. The ouvrage is now flooded.

Ouvrage Bambesch military museum

Ouvrage Bambesch is a lesser work of the Maginot Line. Located in the Fortified Sector of Faulquemont, the ouvrage consists of three infantry blocks, and is located between petits ouvrages Kerfent and Einseling, facing Germany. Completed in 1932, it is located in the Bois de Bambesch. On 20 June 1940 during the Battle of France, Bambesch was attacked by German forces, whose artillery battered the position, which could not be effectively supported by its neighbors, into surrender. Since 1973, Bambesch has been operated as a museum and is open to the public.

Ouvrage Laudrefang

Ouvrage Laudrefang is a lesser work of the Maginot Line. Located in the Fortified Sector of Faulquemont, the ouvrage consists of one infantry block, and is located between petits ouvrages Einseling and Teting, facing Germany. Laudrefang was originally planned as a gros ouvrage. With a heavy armament for a petit ouvrage it successfully defended its neighbors against German attack during the Battle of France. Laudrefang is abandoned and flooded, and was heavily damaged by German bombardment in 1940.

Ouvrage Molvange

Ouvrage Molvange is a large work, or gros ouvrage of the Maginot Line. The fortification complex faces the France-Luxembourg border from a height near Entrange in the Moselle département. The complex, armed and occupied in 1935, is located on the heights of Entrange, at an altitude of about 400 meters (1,300 ft). Molvange is flanked by the even larger Ouvrage Rochonvillers to the west and smaller petit ouvrage Immerhof to the east, part of the Fortified Sector of Thionville. Molvange was not involved in significant combat during World War II, but due to its size it was repaired and retained in service after the war. During the Cold War Molvange's underground barracks and former ammunition magazine became a hardened military command center.

Ouvrage Fermont

Ouvrage Fermont is a gros ouvrage of the Maginot Line, part of the Fortified Sector of the Crusnes in northeastern France, near the community of Montigny-sur-Chiers. It is located near the commune of Montigny-sur-Chiers, between the petit ouvrage Ferme Chappy and the gros ouvrage Latiremont. The position is near the western end of the Line, about four kilometers east of Longuyon, facing Belgium. There was significant combat at Fermont during the last stages of the Battle of France. It was repaired and reactivated during the 1950s and 1960s as a strongpoint in the event of an invasion by Soviet forces. After being abandoned by the military, it has been restored and is maintained as a museum.

Ouvrage Ferme Chappy

Ouvrage Ferme Chappy is a petit ouvrage of the Maginot Line in northeastern France. It is located at the western end of the Fortified Sector of the Crusnes near Longuyon in the Meurthe-et-Moselle département, facing Belgium. The gros ouvrage Fermont borders Ferme Chappy's artillery coverage to the east. A wide gap existed to the west in the direction of Longuyon, covered only by blockhouses and natural obstacles such as rivers. Ferme Chappy was assaulted by German forces during the Battle of France in June 1940, fending off the attack with artillery support from Fermont. Chappy surrendered with its neighbors on 27 June. It was abandoned after the war and is now private property.

Ouvrage Aumetz

Ouvrage Aumetz is a small work, or petit ouvrage of the Maginot Line. It is part of the Fortified Sector of the Crusnes and is located near the community of Aumetz in the Moselle département of France. The petit ouvrage flanked by the gros ouvrages Bréhain and Rochonvillers, all facing the France-Luxembourg border. Aumetz was initially planned as a gros ouvrage of six combat blocks, but only three infantry blocks were built. Aumetz saw limited action during the Battle of France. In the 1970s it was the first Maginot position to be offered for sale to the public.

Ouvrage Otterbiel

Ouvrage Otterbiel forms part of the Maginot Line in the Fortified Sector of Rohrbach, Sub-sector of Bitche, and is located on the Camp de Bitche of the French Army. It is located between gros ouvrage Schiesseck and petit ouvrage Grand Hohekirkel. Part of the Fortified Sector of Rohrbach, the petit ouvrage comprises four combat blocks and an entry block. Due to budget restrictions, a planned flanking infantry block was never constructed. Otterbiel saw no significant action in the Battle of France, and limited action during the 1944/45 Lorraine Campaign. It was renovated for use during the Cold War. Otterbiel is used for ammunition storage by the French Army.

Ouvrage Grand-Hohékirkel

Ouvrage Grand-Hohékirkel is a petit ouvrage of the Maginot Line, located near Bitche in the French département of Moselle. Grand-Hohékirkel is adjoined by gros ouvrage Otterbiel to the west and petit ouvrage Lembach at some distance to the east, and faces the German frontier. It was part of the Fortified Sector of the Vosges.

Ouvrage Four-à-Chaux military museum

Ouvrage Four-à-Chaux is a gros ouvrage of the Maginot Line, located in the community of Lembach, France, in the Bas-Rhin département. Four à Chaux was adjoined by petit ouvrage Lembach and gros ouvrage Hochwald, and faced the German frontier as part of the Fortified Sector of the Vosges. A "four à chaux" is a lime kiln in French, and the ouvrage was located in the area of a limestone quarry and kiln, which operated until 1939. Four-à-Chaux was bombarded by the invading Germans in late June 1940 during the Battle of France with both aerial attacks and artillery bombardments. Four-à-Chaux survived to surrender at the end of the month. Block 1 was destroyed by the Germans before retreating in the face of American advances in 1945. During the 1950s Four-à-Chaux was renovated and reoccupied against a perceived threat from the Soviet Union. It fell out of use in the 1970s, and is now operated as a museum.

Ouvrage Boussois

Ouvrage Boussois is a petit ouvrage of the Maginot Line, built as part of the "New Fronts" program to address shortcomings in the Line's coverage of the border with Belgium. Like the other three ouvrages near Maubeuge, it is built on an old Séré de Rivières fortification, near the town of Boussois. The fortification surrendered to the Germans twice, in the First World War on 6 September 1914, and in the Second World War on 22 May 1940. The site is now abandoned.

Ouvrage Vélosnes

Ouvrage Vélosnes is a gros ouvrage of the Maginot Line, located in the Fortified Sector of Montmédy between the towns of Othe and Vélosnes, facing Belgium. It possesses four combat blocks and one entrance block. It is located to the east of petit ouvrage Thonnelle. The position was sabotaged and abandoned by French forces that were ordered to retreat from the exposed position in June 1940 during the Battle of France. The ouvrage is abandoned and is administered as a nature preserve.

Ouvrage Thonnelle

Ouvrage Thonnelle is a petit ouvrage of the Maginot Line, located in the Fortified Sector of Montmédy between the towns of Thonnelle and Verneuil-Petit, facing Belgium. It possesses four combat blocks. It is located between gros ouvrages Vélosnes and Chesnois. The position was sabotaged and abandoned by French forces that were ordered to retreat from the exposed position in June 1940 during the Battle of France. The ouvrage is abandoned.

Ouvrage Chesnois

Ouvrage Chesnois, also known as Ouvrage Chênois, is a gros ouvrage of the Maginot Line, located in the Fortified Sector of Montmédy, facing Belgium. The ouvrage lies between the towns of Montlibert and Thonne-le-Thil. It possesses six combat blocks. It is located between gros ouvrage Thonnelle and petit ouvrvage La Ferté. The position was sabotaged and abandoned by French forces that were ordered to retreat from the exposed position in June 1940 during the Battle of France. The ouvrage is now abandoned and sealed.

Ouvrage La Ferté

Ouvrage La Ferté, also known as Ouvrage Villy-La Ferté, is a petit ouvrage of the Maginot Line, located in the Fortified Sector of Montmédy, facing Belgium. The ouvrage lies between the towns of Villy and La Ferté-sur-Chiers. It possesses two combat blocks linked by an underground gallery. The westernmost position in its sector, it was a comparatively weakly armed fortification in an exposed position that left it vulnerable to isolation and attack. After a sustained attack during the Battle of France the position was overwhelmed by German forces and was destroyed with its entire garrison killed. The fighting at La Ferté was the heaviest of any position in the Maginot Line. It is preserved as a war memorial.




Further reading