In 1921 , Sadeh was a Haganah ( Defense ) commander in Jerusalem . During the 1929 riots he took part in the battle defending Haifa . When the 1936 – 1939 Arab revolt in Palestine began , Sadeh established the Nodedet ( '' Wandering Troop '' or '' Patrol Unit '' ) in Jerusalem , that confronted the Arabs in their villages and bases . He demanded that his troops " leave the defences " and initiate military operations
1929 riots
1929 Palestine riots
Yitzhak Sadeh