page_title: History of the tank
section_title: Operational use in World War I
hierarchical_section_title: History of the tank / Operational use in World War I
caption_attribution_description: English: An early model British Mark I "male" tank, named C-15, near Thiepval, 25 September 1916. The tank is probably in reserve for the Battle of Thiepval Ridge which began on 26 September. The tank is fitted with the wire "grenade shield" and steering tail, both features discarded in the next models.
context_page_description: The history of the tank begins with World War I, when armoured all-terrain fighting vehicles were introduced as a response to the problems of trench warfare, ushering in a new era of mechanized warfare. Though initially crude and unreliable, tanks eventually became a mainstay of ground armies. By World War II, tank design had advanced significantly, and tanks were used in quantity in all land theatres of the war. The Cold War saw the rise of modern tank doctrine and the rise of the general-purpose main battle tank. The tank still provides the backbone to land combat operations in the 21st century.
context_section_description: The first offensive using tanks took place on 15 September 1916, during the Battle of the Somme. Forty-nine of the Mark I type were committed, of which 32 were mechanically fit to take part in the advance and achieved some small, local successes. In July 1917, 216 British tanks were employed in the Third Battle of Ypres but found it almost impossible to operate in the muddy conditions and achieved little. Not until 20 November 1917, at Cambrai, did the British Tank Corps get the conditions it needed for success. Over 400 tanks penetrated almost six miles on a 7-mile wide front. However, success was not complete because the infantry failed to exploit and secure the tanks' gains, and almost all the territory gained was recaptured by the Germans. The British scored a far more significant victory the following year, on 8 August 1918, with 600 tanks in the Battle of Amiens. General Erich Ludendorff referred to that date as the "Black Day" of the German Army.
  Parallel to the British development, France designed its own tanks. The first two, the medium Schneider CA and heavy Saint-Chamond, were not well-conceived, though produced in large numbers and showing technical innovations, the latter using an electro-mechanical transmission and a long 75 mm gun. Both types saw action on numerous occasions but suffered consistently high losses. In 1918 the Renault FT light tank was the first tank in history with a "modern" configuration: a revolving turret on top and an engine compartment at the rear; it would be the most numerous tank of the war. A last development was the superheavy Char 2C, the largest tank ever to see service, be it some years after the armistice.
  The German response to the Cambrai assault was to develop its own armoured program. Soon the massive A7V appeared. The A7V was a clumsy monster, weighing 30 tons and with a crew of eighteen. By the end of the war, only twenty had been built. Although other tanks were on the drawing board, material shortages limited the German tank corps to these A7Vs and about 36 captured Mark IVs. The A7V would be involved in the first tank vs. tank battle of the war on April 24, 1918 at the Second Battle of Villers-Bretonneux—a battle in which there was no clear winner.
  Numerous mechanical failures and the inability of the British and French to mount any sustained drives in the early tank actions cast doubt on their usefulness—and by 1918, tanks were extremely vulnerable unless accompanied by infantry and ground-attack aircraft, both of which worked to locate and suppress anti-tank defences.
  But Gen. John J. Pershing, Commander in Chief, American Expeditionary Forces (AEF), requested in September 1917 that 600 heavy and 1,200 light tanks be produced in the United States. When General Pershing assumed command of the American Expeditionary Force and went to France, he took Lt. Col. George Patton. Patton became interested in tanks. They were then unwieldy, unreliable, and unproved instruments of warfare, and there was much doubt whether they had any function and value at all on the battlefield. Against the advice of most of his friends, Patton chose to go into the newly formed US Tank Corps. He was the first officer so assigned.
  The first American-produced heavy tank was the 43.5-ton Mark VIII (sometimes known as the "Liberty"), a US-British development of the successful British heavy tank design, intended to equip the Allied forces. Armed with two 6-pounder cannons and five rifle-caliber machine guns, it was operated by an 11-man crew, and had a maximum speed of 6.5 miles per hour and a range of 50 miles. Because of production difficulties, only test vehicles were completed before the War ended.  The American-built 6.5-ton M1917 light tank was a close copy of the French Renault FT. It had a maximum speed of 5.5 miles per hour and could travel 30 miles on its 30-gallon fuel capacity. Again, because of production delays, none were completed in time to see action. In the summer of 1918 a 3-ton, 2-man tank, (Ford 3-Ton M1918) originated by the Ford Motor Company was designed. It was powered by 
caption: A British Mark I tank in action on 26 September 1916 (moving left to right). Photo by Ernest Brooks.
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