Operation Reinhard
Nazi plans to kill Polish Jews from across the General Government during "Aktion Reinhard" were overseen in occupied Poland by Odilo Globocnik, a deputy of Heinrich Himmler, head of the SS, in Berlin. The Operation Reinhard camps reported directly to Himmler. The staff of Operation Reinhard, most of whom had been involved in the Action T4 involuntary euthanasia programme, used T4 as a framework for the construction of new facilities. Most of the Jews who were killed in the Reinhard camps came from ghettos.