The T-62 is a Soviet medium tank that was first introduced in 1961. As a further development of the T-55 series, the T-62 retained many similar design elements of its predecessor including low profile and thick turret armour. In contrast with previous tanks, which were armed with rifled tank guns, the T-62 was the first tank armed with a smoothbore tank gun that could fire APFSDS rounds at higher velocities.