The Infantry Tank 'Mk IV (A22) was a British heavy 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. This series of tanks was named after Winston Churchill, who was also Minister of Defence at the time, and had been involved with the development of the tank as a weapon during the First World War.
When the Race invaded England in 1943, the Churchill Tank was thrown into the fight simply because it was all Britain had. Woefully under armed with a 2 pounder gun, the Churchill was mainly used as an Infantry support tank.