ŻZW
The Uprising was led by ŻOB ("Jewish Combat Organization") and the ŻZW. The ŻZW ("Jewish Military Union") was the better supplied in arms. The ŻOB had more than 750 fighters, but lacked weapons; they had only 9 rifles, 59 pistols and several grenades. A developed network of bunkers and fortifications were formed. The Jewish fighters also received support from the Polish Underground (Armia Krajowa). The German forces, which included 2,842 Nazi soldiers and 7,000 security personnel, were not capable of crushing the Jewish resistance in open street combat and after several days, decided to switch strategy by setting buildings on fire in which the Jewish fighters hid. The commander of the ŻOB, Mordechai Anielewicz, died fighting on 8 May 1943 at the organization's command centre on 18 Mila Street.