sentences:  Donovan soon became the first deputy of U.S. Supreme Court Justice Robert H. Jackson, who had been appointed by President Truman to serve as U.S. Chief of Counsel for the prosecution of Nazi war criminals.Sonnenfeldt moved with Donovan into that project, first to Paris and then to Nuremberg.In 1946, Sonnenfeldt left Nuremberg and the Army and returned to the United States.