Mark I

The Mark I was the world's first tank, tracked and armed armoured vehicle, to enter combat. The name "tank" was initially a code name to maintain secrecy and disguise its true purpose.[3] 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.