Nazi's Operation Reinhard(1941-1943) had 3 death camps: Treblinka, Sobibor, & Belzec; all in scarcely populated eastern Poland Camps' function was to kill In 1943 Treblinka & Sobibor both had a revolt 50 out of 600 Jews alive after breaking out of Sobibor 40 out of 650 Jews alive after Treblinka