Erich Keyser (12 October 1893 – 21 February 1968) was a Nazi activist and far-right nationalist historian connected with the anti-Polish ideology of Ostforschung and the racist Volkisch movement. He supported German expansion in Central and Eastern Europe and was involved with the planning of ethnic cleansing by the Third Reich during the Second World War. After 1945 he exploited the Cold War to promote the interests of German nationalism and chauvinism in his historical writing. Source: Wikipedia (en)