Marek Edelman - Wikipedia, the free encyclopedia: "to the Warsaw Ghetto. In 1942, as a Bund youth leader he co-founded the underground Jewish Combat Organization (Żydowska Organizacja Bojowa, ŻOB). In the Warsaw Ghetto Uprising of April–May 1943, led by Mordechaj Anielewicz, Edelman was one of the three sub-commanders and then became the leader after the death of Anielewicz.
When the Germans had stopped their campaign of transporting Ghetto residents to Treblinka extermination camp in September 1942, only 60,000 had remained."
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