Comparing: AMX 40 vs. A-20 vs. Valentine II

Development was started in March 1940. Initially, the vehicle was to have a wheeled caterpillar propulsion system. The blueprint of the vehicle was created but in July 1940 work was discontinued.

Development of the A-20 tank started at Kharkiv Factory No. 183 in December 1937. The project was a further development of the BT-7 tank and became a predecessor of the legendary T-34. Work on the vehicle was led by Mikhail Koshkin. On May 18, 1938, technical characteristics of the tank designated BT-20 were approved. Only a few experimental prototypes, with a wheeled caterpillar suspension, were built for training purposes.

A British tank supplied to the U.S.S.R. under Lend-Lease. A total of 3,782 vehicles were sent to the Soviet Union, with some lost at sea during transport to Murmansk.