Born in 1921 in Poland. At 15 immigrated to Eretz Israel with his family and in 1938 joined the Irgun. During the "Hunting Season" the police searched for him at his home in Tel Aviv and hence he was transferred to Jerusalem and served as commander of the Fighting Force. Took part in numerous operations, and, among them, commanded the second assault on the British Intelligence offices in the Russian Compound in Jerusalem and was commended for his conduct in this battle. In June 1945 was transferred to Tel Aviv, attached to the Planning Division, and took part in planning the blowing up of the King David Hotel, the attack on the British officers club and other operations.