In December 1930, the Soviet Office of Motorization and Mechanization (PMR) ordered the development of a heavy tank to work with the Red Army. It was a 50 ton behemoth with five turrets. In fact the T-365 was the only five turreted tank in history. Development was almost impossible simply because the Russians didn’t have enough depth in their tank engineering to make this tank. They hired the help of a German engineer named Grotte who worked in Russia with a team of German and Soviet engineers.
The T-35 fielded a 76.2 mm main gun and five 7.62 mm machine guns. It had up to 30mm of armor in the front plating. Te tank saw some parade action and some combat at Barbarossa. Unfortunately it was mostly a disaster because it broke down. To demonstrate how inexperience the Russians were at heavy tank design in 1930, keep in mind they only made 61 T-35s.