The T-34 was the mainstay of the Soviet Red Army armoured forces throughout the war. Its general specifications remained nearly unchanged until early 1944, when it received a firepower upgrade with the introduction of the greatly improved T-34-85 variant. Czechoslovak produced T-34-85s were used by Egypt in the Arab-Israeli Wars of 1956 and 1967 (Six-Day War) in the Sinai Peninsula. Egypt went on to build the T-34-100, a local and unique conversion that was made up of a Soviet BS-3 100 mm heavy field-artillery gun mounted within a heavily modified turret, as well as the T-34-122 mounting the D-30 gun. In 1956, they were used as regular tanks to support Egyptian infantry, the tank was still in use by the Yom Kippur War in October 1973.
