For seven months after the assassination of Lord Moyne, members of the Palmach under the command of Shimon Avidan were involved in the Saison Operation, in which they cooperated with the British in an attempt to crush the Irgun and Stern Gang. But with David Ben-Gurion's decision, 1 October 1945, to launch an armed struggle against the British, the Palmach entered an alliance with the dissident groups, called The Hebrew Resistance Movement. On 10 October 1945 a force led by Yitzhak Rabin raided the prison at Atlit freeing 208 Jewish prisoners. The first joint operation took place on 31 October 1945 when the Palmach sank three British patrol boats, 2 in Haifa and one in Jaffa, and were involved in 153 bomb attacks on bridges and culverts of the railway system.