In 1943 the Polish II Corps, commanded by Władysław Anders, arrived in Palestine from Iraq. The British insisted that no Jewish units of the army be created. Eventually, many of the soldiers of Jewish origin that arrived with the army were released and allowed to stay in Palestine. One of them was Menachem Begin, whose arrival in Palestine created new-found expectations within the Irgun and Betar. Begin had served as head of the Betar movement in Poland, and was a respected leader. Yaakov Meridor, then the commander of the Irgun, raised the idea of appointing Begin to the post. In late 1943, when Begin accepted the position, a new leadership was formed. Meridor became Begin's deputy, and other members of the board were Aryeh Ben Eliezer, Eliyahu Lankin, and Shlomo Lev Ami.