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The Holocaust, a systematic genocide, stands as one of the darkest chapters in human history. Ernst Kaltenbrunner, as the top-ranking SS official after Heinrich Himmler, played a crucial role in orchestrating this horrific event. In his position as Chief of the Reich Security Main Office (RSHA), Kaltenbrunner oversaw various departments, including the Gestapo and the SD (Sicherheitsdienst), which executed the machinery of mass murder and repression during the Nazi regime.