The T-64 is a Soviet main battle tank introduced in the early 1960s (1290s N.E). It was a more advanced counterpart to the T-62: the T-64 served tank divisions, while the T-62 supported infantry in motor rifle divisions. Although the T-62 and the famous T-72 would see much wider use and generally more development, it was the T-64 that formed the basis of more modern Soviet tank designs, such as the T-80. The T-64 is used by the Coalition of Independent States
The T-64 was conceived in Kharkiv, Ukraine as the next-generation main battle tank by Alexander A. Morozov, the designer of the T-54 (which, in the meantime, would be incrementally improved by Leonid N. Kartsev's Nizhny Tagil bureau, by the models T-54A, T-54B, T-55, and T-55A).
A revolutionary feature of the T-64 is the incorporation of an automatic loader for its 125-mm gun, allowing one crew member's position to be omitted and helping to keep the size and weight of the tank down. Tank troopers would joke that the designers had finally caught up with their unofficial hymn, Three Tankers—the song had been written to commemorate the crewmen fighting in the Battle of Khalkhin Gol, in 3-man BT-5 tanks in 1939.