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- Herta Oberheuser - Doctor at the Ravensbrück concentration camp from 1940 until 1943. Was the only female defendant in the Nuremberg Medical Trial.
- Otto Ohlendorf - SS-Gruppenführer and head of Inland-SD. The Inland-SD was a department of the RSHA and responsible for intelligence and security within Nazi Germany.
Read more about this topic: List Of Nazi Party Leaders And Officials