Gavish joined the
Palmach at age 18. He took part in the
Night of the Bridges in 1946. During the
1948 Arab–Israeli War, Gavish fought in the Palmach under
Yigal Allon. Following the war, he stayed in the
Israel Defense Forces and rose through the ranks. Between 1965 and 1969, he was chief commander of the
Southern Command. During his military career, he led the Israeli offensive on the Egyptian forces in Sinai during the Six-Day War. Although the ground campaign was very successful, his subordinated divisional commanders, generals
Israel Tal,
Avraham Yoffe and
Ariel Sharon, received more praise than he. ==Death==