Answer
During the war, Jochen Peiper served as personal adjutant to Heinrich Himmler, who was Reichsführer-SS and the chief of the Nazi paramilitary forces. Peiper was a high-ranking officer in the Waffen-SS, and he was known for his ruthlessness and brutality. He was involved in several war crimes, including the Malmedy massacre, in which 84 American prisoners of war were killed.