Today's tank is the British Churchill "Crocodile" Heavy Tank.
The Crocodile was another of Major General Percy Hobart's "Hobart's Funnies" tanks. What made the Crocodile unique was it's secondary weapon, a flamethrower.
The main armament was the QF 75mm. The requirements for the Crocodile were that it could maintain a flame for at least a minute with a range of 80 yards and that the fuel trailer be able to be jettisoned.
Production began in 1944 and the tank was in service until 1951. It saw combat in World War II and Korea.