Comparing: IS-3A vs. AMX M4 mle. 49

In 1956–1957, the Military Armored Forces Academy developed a speculative design for a new loading system on the IS-3 and T-10 heavy tanks. The IS-3 variant featured a double-row ammo rack with an automatic loading system. The crew was reduced to three members: commander, gunner, and driver. The turret was redesigned in order to accommodate the loading mechanism. The vehicle existed only in blueprints.

A heavy tank that was originally known as Project 141. Since France needed modern heavy tanks, development started immediately after World War II. Existed only in blueprints.