Comparing: T7 Combat Car vs. Pz.Kpfw. I vs. BT-2

Light wheeled caterpillar vehicle with machineguns, developed for the U.S. cavalry. The trials of the first prototype started in April 1937 and continued until 1939. However, the T7 was discontinued in favor of track-type vehicles.

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.

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.