The Tank, Infantry, Mk IV (A22) was a heavy British infantry tank used in the Second World War, best known for its heavy armour, large longitudinal chassis with all-around tracks with multiple bogies, and its use as the basis of many specialist vehicles. It was one of the heaviest Allied tanks of the war.
British Medium Mark A Whippet tanks advance past the body of a dead soldier, moving to an attack along a road near Achiet-le-Petit, France, on August 22, 1918. The Whippets were faster and lighter than previously deployed British heavy tanks. (National Library of New Zealand)