Both the M-50 and M-51 saw combat in the Six-Day War that left the Golan Heights, the West Bank, and the Sinai peninsula in Israeli hands, often fighting against Soviet World War II-era armor like the T-34-85 (for example at the Battle of Abu-Ageila). Both were also employed in the 1973 Yom Kippur War alongside and against much more modern tanks. The use of such seemingly obsolete tanks was necessary given the desperate nature of the fighting.