Comparing: T28 Concept vs. SU-100M1

The development of this heavy breakthrough tank began in September 1943. It was planned to utilize certain components of the M6 tank as well as the electromechanical transmission and 100-mm T5 gun, mounted in a turret of limited traverse with 203-mm armor protection. The vehicle was intended to assault the fortifications of the German "Siegfried Line" (known as the "Westwall" to the Germans). The U.S. land forces rejected the project during the design phase. The vehicle was later modified into the T95 heavy breakthrough tank.

Developed at the UHMP (Ural Heavy Machinery Plant) on the basis of the T-34-85. The fighting compartment was located in the rear. The vehicle superceded by the SU-100M-2, based on the basis of the T-44, and never manufactured.