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A pillbox is a type of blockhouse, or concrete dug-in guard-post, often camouflaged, normally equipped with loopholes through which defenders can fire weapons. It is in effect a trench firing step, hardened to protect against small-arms fire and grenades, and raised to improve the field of fire.
The modern concrete pillbox originated on the Western Front of World War I, in the German Army [1] in 1916.
The origin of the term is disputed. It has been widely assumed to be a jocular reference to the perceived similarity of the fortifications to the cylindrical and hexagonal boxes in which medical pills were once sold; also, the first German concrete pillboxes discovered by the Allies in Belgium were so small and light that they were easily tilted or turned upside down by the nearby explosion of even medium (240mm) shells. [3] However, it seems more likely that it originally alluded to pillar boxes, with a comparison being drawn between the loophole on the pillbox and the letter-slot on the pillar box. [4]
The term is found in print in The Times on 2 August 1917, following the beginning of the Third Battle of Ypres; and in The Scotsman on 17 September 1917, following the German withdrawal onto the Hindenburg Line. Other unpublished occurrences have been found in war diaries and similar documents of about the same date; and in one instance, as "Pillar Box", as early as March 1916. [4]
The concrete nature of pillboxes means that they are a feature of prepared positions. Some pillboxes were designed to be prefabricated and transported to their location for assembly. During World War I, Sir Ernest William Moir produced a design for concrete machine-gun pillboxes [5] constructed from a system of interlocking precast concrete blocks, with a steel roof. Around 1,500 Moir pillboxes were eventually produced (with blocks cast at Richborough in Kent) and sent to the Western Front in 1918. [6] [7]
Pillboxes are often camouflaged to conceal their location and to maximise the element of surprise. They may be part of a trench system, form an interlocking line of defence with other pillboxes by providing covering fire to each other (defence in depth), or they may be placed to guard strategic structures such as bridges and jetties.
Pillboxes are hard to defeat and require artillery, anti-tank weapons or grenades to overcome.
The French Maginot Line built between the world wars consisted of a massive bunker and tunnel complex, but as most of it was below ground, little could be seen from the ground level. The exception were the concrete blockhouses, gun turrets, pillboxes and cupolas which were placed above ground to allow the garrison of the Maginot line to engage an attacking enemy. [8]
Between the Abyssinian Crisis of 1936 and World War II, the British built about 200 pillboxes on the island of Malta for defence in case of an Italian invasion. [9] Fewer than 100 pillboxes still exist, and most are found on the northeastern part of the island. A few of them have been restored and are cared for, but many others were demolished. Some pillboxes are still being destroyed nowadays as the authorities do not consider them to have any architectural or historic value, [10] despite heritage NGOs calling to preserve them. [11]
About 28,000 pillboxes and other hardened field fortifications were constructed in Britain in 1940 as part of the British anti-invasion preparations of World War II. About 6,500 of these structures still survive. [12]
Pillboxes for the Czechoslovak border fortifications were built before World War II in Czechoslovakia in defence against a German attack. None of these were actually used against their intended enemy during the German invasion, but some were used against the advancing Soviet armies in 1945. The Japanese also made use of pillboxes in their fortifications of Iwo Jima, and on other occupied islands and territories.
About 750,000 pillboxes (Albanian : bunkerët) were built by the Albanian Hoxhaist government from the 1960s until the 1980s in Cold War paranoia, most never used for their intended purpose although few were used in the Insurrection of 1997 and the 1999 Kosovo War and the construction costs were a scandalous drain on needed funds for social development. [13] [14] [15] Most are now derelict, though some have been repurposed as residential accommodations, cafés, nightclubs, storehouses, cabins, animal shelters and one in Tirana as a museum. [16] [17] [18] [19]
During the 2022 Russian invasion of Ukraine, pillboxes have been used to gain advantages in trench warfare. [20]
pill-box [:] A concrete fortification mostly used for machine guns, invented by the Germans.
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The Maginot Line, named after the French Minister of War André Maginot, is a line of concrete fortifications, obstacles and weapon installations built by France in the 1930s to deter invasion by Nazi Germany and force them to move around the fortifications. It was impervious to most forms of attack; consequently, the Germans invaded through the Low Countries in 1940, passing it to the north. The line, which was supposed to be fully extended further towards the west to avoid such an occurrence, was finally scaled back in response to demands from Belgium. Indeed, Belgium feared it would be sacrificed in the event of another German invasion. The line has since become a metaphor for expensive efforts that offer a false sense of security.
A bunker is a defensive military fortification designed to protect people and valued materials from falling bombs, artillery, or other attacks. Bunkers are almost always underground, in contrast to blockhouses which are mostly above ground. They were used extensively in World War I, World War II, and the Cold War for weapons facilities, command and control centers, and storage facilities. Bunkers can also be used as protection from tornadoes.
Trench warfare is a type of land warfare using occupied lines largely comprising military trenches, in which combatants are well-protected from the enemy's small arms fire and are substantially sheltered from artillery. It became archetypically associated with World War I (1914–1918), when the Race to the Sea rapidly expanded trench use on the Western Front starting in September 1914.
The Siegfried Line, known in German as the Westwall, was a German defensive line built during the late 1930s. Started in 1936, opposite the French Maginot Line, it stretched more than 630 km (390 mi) from Kleve on the border with the Netherlands, along the western border of Nazi Germany, to the town of Weil am Rhein on the border with Switzerland. The line featured more than 18,000 bunkers, tunnels and tank traps.
The Mannerheim Line was a defensive fortification line on the Karelian Isthmus built by Finland against the Soviet Union. While this was never an officially designated name, during the Winter War it became known as the Mannerheim Line, after Finnish Army's then commander-in-chief Field Marshal Baron Carl Gustaf Emil Mannerheim. The line was constructed in two phases: 1920–1924 and 1932–1939. By November 1939, when the Winter War began, the line was by no means complete.
A blockhouse is a small fortification, usually consisting of one or more rooms with loopholes, allowing its defenders to fire in various directions. It is usually an isolated fort in the form of a single building, serving as a defensive strong point against any enemy that does not possess siege equipment or, in modern times, artillery, air force or cruise missiles. A fortification intended to resist these weapons is more likely to qualify as a fortress or a redoubt, or in modern times, be an underground bunker. However, a blockhouse may also refer to a room within a larger fortification, usually a battery or redoubt.
Beacon Hill Battery is a late-19th and 20th century coastal fortification that was built to defend the port of Harwich, Essex. It is a scheduled ancient monument.
The fortifications of Metz, a city in northeastern France, are extensive, due to the city's strategic position near the border of France and Germany. After the Franco-Prussian War of 1870, the area was annexed by the newly created German Empire in 1871 by the Treaty of Frankfurt and became the Reichsland Alsace–Lorraine. The German Army decided to build a fortress line from Mulhouse to Luxembourg to protect their new territories. The centerpiece of this line was the Moselstellung between Metz and Thionville, in Lorraine.
The Koningshooikt–Wavre Line, abbreviated to KW Line and often known as the Dyle Line after the Dijle (Dyle) river, was a 60 kilometres (37 mi)-long fortified line of defence prepared by the Belgian Army between Koningshooikt and Wavre which was intended to protect Brussels from a possible German invasion. Construction on the KW Line began in September 1939 after World War II had begun but while Belgium itself remained a neutral state. It was subsequently extended southwards from Wavre towards Namur. The line itself consisted of bunkers, anti-tank ditches, and barricades including so-called Cointet-elements and played a key role in Allied strategy during the German invasion of Belgium in May 1940. However, its role in the actual fighting was ultimately minimal. In 2009 an inventory of surviving emplacements was begun.
British hardened field defences of World War II were small fortified structures constructed as a part of British anti-invasion preparations. They were popularly known as pillboxes, a reference to their shape.
Czechoslovakia built a system of border fortifications as well as some fortified defensive lines inland, from 1935 to 1938 as a defensive countermeasure against the rising threat of Nazi Germany. The objective of the fortifications was to prevent the taking of key areas by an enemy—not only Germany but also Hungary and Poland—by means of a sudden attack before the mobilization of the Czechoslovak Army could be completed, and to enable effective defense until allies—Britain and France, and possibly the Soviet Union—could help.
The Alpine Wall was an Italian system of fortifications along the 1,851 km (1,150 mi) of Italy's northern frontier. Built in the years leading up to World War II at the direction of Italian dictator Benito Mussolini, the defensive line faced France, Switzerland, Austria, and Yugoslavia. It was defended by the "Guardia alla Frontiera" (GaF), Italian special troops.
The Bison was an improvised fighting vehicle frequently characterised as a mobile pillbox. Bisons were produced in Britain during the invasion crisis of 1940-1941. Based on a number of different lorry chassis, it featured a fighting compartment protected by a layer of concrete. Bisons were used by the Royal Air Force (RAF) to protect aerodromes and by the Home Guard. They acquired the generic name "Bison" from their main manufacturer.
Coastal defenceand coastal fortification are measures taken to provide protection against military attack at or near a coastline, for example, fortifications and coastal artillery. Because an invading enemy normally requires a port or harbour to sustain operations, such defences are usually concentrated around such facilities, or places where such facilities could be constructed. Coastal artillery fortifications generally followed the development of land fortifications, usually incorporating land defences; sometimes separate land defence forts were built to protect coastal forts. Through the middle 19th century, coastal forts could be bastion forts, star forts, polygonal forts, or sea forts, the first three types often with detached gun batteries called "water batteries". Coastal defence weapons throughout history were heavy naval guns or weapons based on them, often supplemented by lighter weapons. In the late 19th century separate batteries of coastal artillery replaced forts in some countries; in some areas these became widely separated geographically through the mid-20th century as weapon ranges increased. The amount of landward defence provided began to vary by country from the late 19th century; by 1900 new US forts almost totally neglected these defences. Booms were also usually part of a protected harbor's defences. In the middle 19th century underwater minefields and later controlled mines were often used, or stored in peacetime to be available in wartime. With the rise of the submarine threat at the beginning of the 20th century, anti-submarine nets were used extensively, usually added to boom defences, with major warships often being equipped with them through early World War I. In World War I railway artillery emerged and soon became part of coastal artillery in some countries; with railway artillery in coast defence some type of revolving mount had to be provided to allow tracking of fast-moving targets.
The Fort de Koenigsmacker is a fortification located to the northeast of Thionville in the Moselle department of France. It was built by Germany next to the town of the same name in the early 20th century after the annexation of the Moselle following the Franco-Prussian War. The Fort de Koenigsmacker was part of the Moselstellung, a group of eleven fortresses surrounding Thionville and Metz to guard against the possibility of a French attack aimed at regaining Alsace and Lorraine, with construction taking place between 1908 and 1914. The fortification system incorporated new principles of defensive construction to deal with advances in artillery. Later forts, such as Koenigsmacker, embodied innovative design concepts such as dispersal and concealment. These later forts were designed to support offensive operations, as an anchor for a pivoting move by German forces into France.
The Fortified Sector of Montmédy was the French military organisation that in 1940 controlled the section of the Maginot Line between Sedan and Longuyon, a distance of about 60 kilometres (37 mi). The sector was not as strongly defended as other sections of the Maginot Line, facing the southern Ardennes region of Belgium. Large portions of the Montmédy sector were defended by fortified houses, blockhouses or casemates. The sector includes only four ouvrages of the type found in stronger sections of the Line. The weakly defended area in front of Sedan was the scene of a major breakthrough by German forces in the opening of the Battle of France. This was followed by a German assault on the Maginot Ouvrage La Ferté, which killed the entire garrison, the only such event on the Maginot Line.
From 1946 to 1964, Czechoslovakia built fortifications along the south and south-western frontier, on the common border with the capitalist countries of West Germany and Austria. Unlike the Czechoslovakian section of the Iron Curtain, whose main function was to prevent citizens of the Eastern Bloc escaping to the West, the purpose of these border fortifications was defence against possible German revanchist aggression and later also against possible attack by NATO forces.
The Árpád Line was a line of fortifications built in 1941-44 in the north-eastern and eastern Carpathian Mountains, along the border of Kingdom of Hungary. It was named after Árpád, the head of the Hungarian tribes. The main function of the Line was to protect Northern Transylvania and Carpathian Ruthenia from the east.
After the Wehrmacht occupied the Channel Islands on 30 June 1940, they assessed the existing defences to determine if they would be of use. The Germans found the Islands' fortifications antiquated and woefully inadequate for modern warfare.
The flexible defense is a military theory about the design of modern fortifications. The examples of "flexible" defense-lines are not based on dense lines of heavily armed, large and expensive concrete fortifications as the systems such as the Maginot Line were. Their protective capacity hinges on multiple lines of obstacles and small shelters fitting into the environment. They are "flexible" because soldiers are not locked in pillboxes, but fight instead in easily replaceable open earth-wood made positions, while bunkers serve only as shelters during bombardments. As a result, they are able to adapt to the opponent's movements, and there are no easily targeted large buildings in these lines.
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