The PT-76 is a Soviet amphibious light tank which was introduced in the early 1950s and soon became the standard reconnaissance tank of the Soviet Army and the other Warsaw Pact armed forces. It was widely exported to other friendly states, like India, Iraq, North Korea and North Vietnam. Overall, some 25 countries used the PT-76
T-55M3 tanks and Israel coordinated by Vietnam to upgrade from the T-54B models manufactured by the Soviet Union to the People's Army of Vietnam.
Many weapons systems as well as defense systems and new equipment installed on the vehicle increasing modernization T-54/55M3 of Vietnam. In particular, the firepower of tanks "convergence" of the design solution and the technology is quite modern from 5 countries with growing industrial and defense as Russia, Israel, Sweden, Germany and the Ukraine (except weapons, equipment and Vietnam self-made)