During the Holocaust, Josef Mengele discarded every medical ethic to perform horrific human experiments at Auschwitz, including non-consensual vivisections, limb transplants, and agonizing surgeries conducted without anesthesia. Japan had its own program that is less known but equally brutal. In occupied China, the Imperial Japanese Army’s Unit 731 operated a vast complex where thousands were subjected to biological warfare tests and lethal physiological experiments to further military research.

During the occupation of Japan after WWII, the US had an important decision to make. Should they hold those responsible for atrocities during the war accountable or should they take the information to advance the national interest? There was extremely valuable data on bioweapons and survival techniques in the face of extreme cold or low oxygen that could save the lives of thousands of soldiers.

Here's what happened. The researchers who worked at Unit 731 were given immunity in exchange for their research data. Most of these scientists lived peacefully after WWII, with a few of them having to go through a 1949 Soviet Trial, which was deemed by the West as communist propaganda. They basically traded their knowledge for freedom and avoided prosecution, like the German scientists who came to America as part of Operation Paperclip.

Most of the horrors on Unit 731 had been hearsays and rumors until recently with the passing of the Freedom of Information Act. Today’s guest is Jenny Chan, and she’s published the book “Unit 731 Cover-up: The Operation Paperclip of the East.” This book is based on documents found in the U.S. National Archives and Records Administration, Russian archival documents, and translations of the Khabarovsk Trial to paint a complete picture of the cover-up of the atrocious act of Unit 731. We look at the war crimes themselves, what happened to the scientists, and the question of whether war crimes should ever be covered up in the name of national interest.

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The East’s Auschwitz: How Imperial Japan’s Secret Experimenters Escaped Justice