Operation Paperclip: The Secret Intelligence Program that Brought Nazi Scientists to America

by Annie Jacobsen

On July 28, 1945, Dr. Hirschkind met with Dr. Ambros and Lieutenant Colonel Tarr in Heidelberg. Ambros brought his wartime deputy with him to the meeting, the Farben chemist Jürgen von Klenck. It was von Klenck who, in the final months of the war, had helped Ambros destroy evidence, hide documents, and disguise the Farben factory in Gendorf so that it appeared to produce soap, not chemical weapons. Jürgen von Klenck was initially detained at Dustbin but later released. The Heidelberg meetings lasted several days. When Dr. Wilhelm Hirschkind left, he had these words for Ambros: “I would look forward after the conclusion of the peace treaty [to] continuing our relations [in my position] as a representative of Dow.” Only later did FIAT interrogators learn about this meeting. Major Tilley’s suspicions were now confirmed. A group inside the U.S. Chemical Warfare Service, including his former partner, Lieutenant Colonel Tarr, did indeed have an ulterior motive that ran counter to the motives of CIOS, FIAT, and the United Nations War Crimes Commission. Tilley’s superior at Dustbin, Major Wilson, confirmed this dark and disturbing truth in a classified military intelligence report on the Ambros affair. “It is believed that the conflict between FIAT… and Lt-Col Tarr was due to the latter’s wish to use Ambros for industrial chemical purposes”