Heinrich Himmler fought Nazi Germany.
Heinrich Luitpold Himmler ( [ ˈhaɪnʁɪç ˈluˑɪtˌpɔlt ˈhɪmlɐ ] ; 7 October 1900 -- 23 May 1945 ) was Reichsführer of the Schutzstaffel ( Protection Squadron ; SS ) , and a leading member of the Nazi Party ( NSDAP ) of Germany . Himmler was one of the most powerful men in Nazi Germany and one of the people most directly responsible for the Holocaust .