Comparing: T21 vs. T37

A lightweight version of the T20 medium tank with the M7 elongated chassis. The vehicle was developed in the first half of 1943. Unlike the T20 tank, the T21 featured reduced armor and lightened armament. The vehicle never entered mass production nor saw service.

The light tank T37 was developed by Detroit Arsenal in the late 1940s to replace the М24 Chaffee. An order was placed for three prototypes. Later, some technical innovations were applied in the development of the T41 and M41 tanks.