page_title: British heavy tanks of World War I
section_title: Combat history
hierarchical_section_title: British heavy tanks of World War I / Combat history
caption_attribution_description: For documentary purposes the German Federal Archive often retained the original image captions, which may be erroneous, biased, obsolete or politically extreme. Mark V* tank Mark IV Female tank
context_page_description: British heavy tanks were a series of related armoured fighting vehicles developed by the UK during the First World War.
  The Mark I was the world's first tank, a tracked, armed, and armoured vehicle, to enter combat. The name "tank" was initially a code name to maintain secrecy and disguise its true purpose by making it appear to be a water transport vehicle for bringing water to the troops at the front line. The type was developed in 1915 to break the stalemate of trench warfare. It could survive the machine gun and small-arms fire in "No Man's Land", travel over difficult terrain, crush barbed wire, and cross trenches to assault fortified enemy positions with powerful armament. Tanks also carried supplies and troops.
  British heavy tanks are distinguished by an unusual rhomboidal shape with a high climbing face of the track, designed to cross the wide and deep trenches prevalent on the battlefields of the Western Front. Due to the height necessary for this shape, an armed turret would have made the vehicle too tall and unstable. Instead, the main armament was arranged in sponsons at the side of the vehicle.
context_section_description: The first tanks were added, as a "Heavy Branch", to the Machine Gun Corps until a separate Tank Corps was formed on 28 July 1917 by Royal Warrant. A small number of Mark I tanks took part in the Battle of the Somme during the Battle of Flers-Courcelette in September 1916. They were used to cut through barbed wire to clear the way for infantry, and were even driven through houses to destroy machine gunner's emplacements. Although many broke down or became stuck, almost a third that attacked made it across no man's land, and their effect on the enemy was noted, leading to a request by the British C-in-C Douglas Haig for a thousand more. This came as a surprise: William Tritton had already started the development of a heavier tank: the Flying Elephant. Unfortunately for the Allies, it also gave the Germans time to develop a specifically designed anti-tank weapon for the infantry, an armour-piercing 7.92 mm K bullet.
  Eight Mk I tanks were used against Turkish forces in the Second Battle of Gaza in April 1917 during the Sinai and Palestine Campaign. With its three destroyed tanks replaced by Mk IVs, the tank company fought at the Third Battle of Gaza.
  British tanks were used with varying success in the offensives of 1917 on the Western Front; however, their first large scale use in a combined operation was at the Battle of Cambrai in November 1917, when nearly 400 tanks working closely with advancing infantry and a creeping barrage overran the German lines in the initial attack. During the Battle of Amiens in August 1918, several hundred Mark V tanks, along with the new Whippet and Mk V* tanks, penetrated the German lines in a foretaste of modern armoured warfare.
  Mark V tanks captured by the Red Army from the White Army in the course of the Russian Civil War were used in 1921 during the Red Army invasion of Georgia and contributed to the Soviet victory in the battle for Tbilisi.
  In 1945, occupying troops came across two badly damaged Mk V tanks in Berlin. Photographic evidence indicates that these were survivors of the Russian Civil War and had previously been displayed as a monument in Smolensk, Russia, before being brought to Berlin after the German invasion of the Soviet Union in 1941. Accounts of their active involvement in the Battle of Berlin have not been verified.
caption: Mark IV female tank knocked out
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