Born in 1898 in Mariopol in the Russian Empire.

Immigrated to Eretz Israel in 1921 and took part in the Jewish defence of Jaffa.

With Avraham Tehomi, took part in the Haganah instructors course.

Was among the founders of the Irgun in its first form and joined the Revisionist movement.

Commanded the Irgun in 1937-1938.