The Vickers-Crayford Rocket Gun is a light 40mm cannon designed to support infantry units during the Great War. After the conflict, the advent of rocket technology and HEAT projectiles saw the British Army recommission the weapon for use as a light anti-vehicle weapon, suitable against the rising threat of mechanised infantry transports. The Mark V was designed in 1943 to meet these requirements; instead of a plain incendiary shell, it launches a 40mm HEAT projectile, which is rocket-boosted after leaving the barrel. While not any good against true tanks, the Mark V Rocket Gun can make short work of motorised and mechanised columns, while lobbing deadly high explosive shells at enemy infantry with great speed.