 Complete the following phrase:  So, by the time of the Six-Day War, Israel had in use the M50 and M51 Shermans, M48A3 Patton, Centurion, AMX-13. The Sherman M-50 and the Sherman M-51, were known abroad as the Super Sherman, and were modified versions of the American M4 Sherman tank. The Sherman also underwent extensive modifications, including a larger 105mm medium velocity French gun, a redesigned turret, wider tracks, more armour, and an upgraded engine and suspension. The Centurion was upgraded with the British 105 mm L7 gun prior to the war. During the Six-day War, only 120 of Israels 250 M48 tanks were combat ready; they were mainly engaged on the Sinai front against the Egyptian army. M48s were also used with mixed results during the 1967 Six-Day War. On the Sinai front, Israeli M48s up-gunned with 105 mm L7 rifled guns were used with success against Egyptian IS-3s, T-54s, T-34s and SU-100s supplied by the Soviet Union in the 