Included on this list, which had been in Colonel Benford’s possession, were seven Nazi doctors hired under Operation Paperclip: Theodor Benzinger, Kurt Blome, Konrad Schäfer, Walter Schreiber, Hermann Becker-Freyseng, Siegfried Ruff, and Oskar Schröder. The fact became instantly clear: U.S. Army intelligence knew all along that these doctors were implicated in murder yet chose to classify the list and hire the doctors for Operation Paperclip.