The Mark VIII, also known as the Liberty, International, or Anglo-American tank, was a continuance of the British rhomboid landship line of tanks. The plans were for the Mark VIII to be assembled in France using American automotive components and British armament and armor. The end of the war spelled the end of the manufacturing consortium, but the US pressed on to construct 100 vehicles with its own engine and armament. The tank had a nonrotating turret on the hull with mounts for three machine guns, and atop this turret was the commander's cupola. The 6 pounder weapons had a caliber of 57mm, and the sponsons in which they were mounted were hinged so that the rear could be pivoted into the hull to reduce shipping width. The tracks were chain-driven in that a bicycle-like chain from the engine spun a roller sprocket, and this roller sprocket drove the track drive sprocket, which was at the time referred to as a road track driving wheel. The tank's tracks were made of armor plate which was 8mm (0.31") thick. The US had removed the Mark VIII from service by 1932, but some of the tanks were transferred to Canada for use as training vehicles after the start of World War II.