T-34 was a technologically innovative produce which addressed the short-comings of the earlier BT series of wheel/track tank. The T-34 was made during the 1936-37 period, the prototype was completed in early 1939, and in September 1940 T-34 was put into series production mounting a 76mm gun.
The produtcion of Jadgtiger started in February of 1943, wooden mock-up was presented to Hitler. Jagdtiger role was to help infantry and combat armored vehicles at long distances. Two prototypes, one with Porsche suspension (made up of 8 roadwheels) and one with Henschel suspension (made up of 9 roadwheels) were completed in February of 1944.
The studying of 90 types tank and developing work to start in 1974, in 1977 that the part was developed and the experiment work began. Called TK-X tank temporarily at that time, it means " the tank while testing ". The date of finalizing the design is postponed by 1990, so also name it 90 types tank.
Almost three years of hard development, the conclusion was the introduction of the T26E3 “General Pershing” into battle during the closing months of European War. After its baptism of fire, the Pershing was standardized as the M26 in late March 1945.