Frederick (“Fritz”) Wiedemann (16 August 1891 in Augsburg – 17 January 1970 in Postmünster) was a German soldier and Nazi Party activist. He was for a time the personal adjutant to Adolf Hitler, having served with him in World War I.[1][2][3] The two men subsequently had a falling-out, and Wiedemann secretly repudiated his Nazi beliefs, warning American and British figures about Hitler's plans for Europe. On one occasion he actively intervened to help the Jewish-born widow of Willi Schmid, a wrongful victim of the Night of the Long Knives, escape Germany.[4]