Comparing: BT-2 vs. Tetrarch vs. T-26

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.

Developed in 1936 by the Vickers-Armstrong company, with a total of 177 vehicles in two basic modifications the Tetrarch Mk I and the Tetrarch Mk ICS manufactured from 1941 through 1942. In 1942 twenty vehicles were delivered to the U.S.S.R. under Lend-Lease, of which 19 fought on the Eastern Front until October 1943.

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.