supervising officers objections regarding experimentation being done at SS controlled facilities. In October 1942, Schreiber reported what he heard at a conference where the results of human experiments at Dachau concentration camp were presented. In May 1943, he headed the third session of the advisory specialists of the Armed Forces. This led to a confrontation in which Schreiber spoke out against human experimentation in general, but especially with biological agents such as plague and typhus, testifying later at the Nuremberg Trials that he "pointed out that bacteria were an unreliable and dangerous weapon" but that he was "confronted with a fait accompli", the decision had already been made, "the Führer had given the Reichsmarschall (Hermann Göring) full powers, and so forth, for carrying out all the preparations." In September 1943, Schreiber accepted the position of the commander of the Training Division C of the Military Medical Academy under the authority of which he denied Kurt Blome, the head of the Posen research institute, permission to conduct his plague research in Sachsenburg. This was later overruled by Himmler. At a medical conference May 16 to 18, 1944, Schreiber learned of research into gas gangrene experiments conducted by Dr. Karl Gebhardt at Hohenlychen Sanatorium. (Nuremberg document 619) In 1944, Schreiber, who had grown increasingly aware of Göring's antagonism toward him, conferred with Dr. Karl Brandt, the attorney for the health care scientific advisory board about what to do. At the beginning of April, 1945, he was stripped of his administrative duties except that of medical officer in charge of the military and civilian sector of Berlin. Post-war Captivity On 30 April 1945, while caring for wounded in a makeshift hospital in Reichstag Building in Berlin, he was taken prisoner of war by the Red Army and transported to the Soviet Union. He spent time at Kransnogorsk POW camp and Lubyanka Prison. On 26 August 1946, the Soviets allowed Schreiber to appear as a witness at the Nuremberg Trials, to give evidence against Göring and Kurt Blome, who had been in charge of German offensive biological weapons development. A recording of his testimony at the trial can be found at the online archive of the Imperial War Museum. The transcript became part of the Nuremberg proceedings against German major war criminals. Schreiber himself was not charged with any war crimes at the Nuremberg trials, although he was convicted in absentia by a Polish