On Jan. 11, 1946, Dr. Franz Blaha was the first inmate of a concentration camp to be called as a witness before the Tribunal. Thomas Dodd, one of the two Executive Trial Counsel of the American Prosecution, commenced the testimony by reading from an affidavit of the witness, who was a medical doctor interned in the Dachau Concentration Camp from April 1941-April 1945. Blaha stated that five doctors, whom he named, performed operations on healthy prisoners including malaria experiments, experiments on the effect of changing air pressure and submersion in cold water, among others.

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.