Comparing: T1 Heavy Tank vs. BDR G1 B vs. Churchill III

Development of the T1E2 started in the U.S.A. in May 1940. The vehicle was designed as a heavy tank. The distinctive features of the vehicle were a cast hull and hydromechanical transmission with a double-disc hydraulic converter. Later, the tank was designated M6. A total of 9 vehicles (1 of which was experimental) were produced. The tank never saw action.

The project of a new vehicle was suggested by engineers of the Baudet-Donon-Rousell company in June 1938. However, the design was never developed.

A British tank supplied to the U.S.S.R. under Lend-Lease. The U.S.S.R. received a total of 301 vehicles, with some lost at sea during transport to Murmansk.