Comparing: SU-85B vs. StuG III Ausf. B

In April-May of 1943, the SU-85B tank destroyer designed by the Gorky Automobile Plant underwent trials. The vehicle was a modernization of the SU-85A and featured the artillery LB-2 gun, 160-hp engine, and SU-76M chassis. The cabin, drive wheels, and spare parts kits were redesigned. Only one prototype was built.

In 1935, Erich von Manstein of the German Army General Staff, in a letter to General Ludwig Beck, described the idea of building assault artillery to support attacking infantry units. Five prototypes of the "zero" series were manufactured in 1937. Early modifications from Ausf.A to Ausf.F/8 were produced until December 1942.