Comparing: T21 vs. MT-25

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.

A proposed project of a light wheeled caterpillar vehicle. The draft was completed in February 1943. The most innovative feature was the suspension design. The suspension wheels were interleaved, and power was delivered to all wheels. No prototypes were manufactured.