Comparing: Cruiser Mk. III vs. D1 vs. Tetrarch

The vehicle was developed on the basis of the M1931 Christie tanks, purchased by the British Army in 1936. The vehicle was intended to be a fast, lightly-armored breakthrough tank. The modified design was deemed successful and became the basis for other cruiser tanks. A total of 65 vehicles were built. They saw combat in France and North Africa in 1940–1941.

Development was started in 1929. Mass production was launched in 1930, with 160 vehicles manufactured by 1935. A total of 152 tanks fought in France. Eighteen vehicles were captured by the German Army and used for training purposes.

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.