Comparing: Pz.Kpfw. I vs. Hotchkiss H35 vs. BT-2

The Pz I Ausf. A was the first mass-produced German tank. In 1935 the design received an upgrade, including elongated hull and a more powerful engine. Mass production of this version, the Pz I Ausf. B, eventually totalled 675 tanks. The standard armament was weak, but some tanks were upgraded on the battlefield to mount 20-mm guns.

Cavalry support tank. Developed in 1934. Mass production was launched in 1935, with a total of 400 vehicles manufactured. In 1938 a new modification, the H38, entered production. About 1000 of the H35/H38/H39 vehicles were produced.

Developed on the basis of the Christie tank M1931. Produced at the Kharkiv Komintern Locomotive Factory (KhPZ), with 650 BT-2 tanks and 1,884 BT-5 tanks manufactured from 1932 through 1935.