Comparing: T1E6 vs. Pz.Kpfw. I vs. T-26

Experimental vehicles T1E4 through T1E6 were heavily influenced by the British Vickers E. The first prototype was manufactured by the Cunningham corporation in 1931. After trials in 1932, an upgraded variant was built. However, a different experimental tank, the T2, was preferred.

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.

Produced in greater numbers than any other tank of the Red Army during the pre-war period, with 11,218 vehicles in four main modifications built from 1931 through 1941.