Comparing: T18 HMC vs. SU-26

A proposed 75 mm howitzer on the chassis of the M3 light tank. Developed by the Firestone Tire and Rubber Company in the fall of 1941. Two prototypes were ordered after the project was approved. The first vehicle was produced in May and underwent trials in June 1942 on the Aberdeen Proving Ground. The project was discontinued in favor of more promising designs.

Self-propelled gun on the basis of the T-26. Produced in Leningrad at the end of 1941, with a total of 12 or 14 vehicles built, three of which remained in service until 1944.