Former German General Erwin Lahousen was one of the few survivors of the small German group which plotted an unsuccessful assassination of Hitler in July 1944. On Nov. 30, 1945 Lahousen testified as the first live witness in the Trial . He was questioned by Colonel John Harlan marshall, chief of the Interrogation Section of the American Prosecution. His testimony gained great attention given his rank as a section chief of the German Abwehr of the Armed Forces under Admiral Canaris and the fact he had Canaris’ diary. Goering was incensed.
This untranslated excerpt shows his direct testimony handled by Amen, Judge Biddle and Judge Rudenko. Also, a cross examination by German defense counsel.

Produced by US Army Signal Corps 1945-1956, housed in National Archives and Records Administration (NARA). Digitized and provided by The United States Holocaust Memorial Museum; Steven Spielberg Film and Video Archive.