 Parts of the Polish First Army also briefly used M4A2 (76 mm) tanks, borrowed from the Red Army after heavy losses in the conquest of Danzig.By the end of 1950, more than 500 76mm gun M4A3E8 tanks were in Korea.These 76 mm-armed Shermans served well in the Korean War and, having better crew training and gun optics, had little problem piercing the armor of North Korean-manned T-34/85 tanks when firing HVAP rounds, which were amply supplied to units.