 The films were originally intended for internal military use, but have been "sanitized" and de-classified, and are now available to the public.In 1945 he narrated “The Nazi Plan”, a documentary film using captured propaganda and newsreel footage to dramatize the Nazis rise to power and was used by the prosecution in the International Military Tribunal in Nuremberg.He served as the narrator on various Hollywood films, including "House on 92nd Street" (1945), "Boomerang" (1947), and "The Iron Curtain" (1948).