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Gustav Franz Wagner (18 July 1911 – 3 October 1980) was an Austrian member of the "SS" with the rank of Staff sergeant ("Oberscharführer"). Wagner was a deputy commander of Sobibor extermination camp in German-occupied Poland, where 200,000-250,000 Jews were gassed during Operation Reinhard. Due to his brutality, he was known as "The Beast" and "Wolf".