Overview
During World War II, Unit 731 secretly developed and used biological weapons in Manchuria. Due to the destruction of evidence and the silence of its members, its full activities have remained largely hidden. Newly uncovered audio from the Khabarovsk Trials reveals that core members justified their research as serving national interests, while using Chinese and Soviet detainees as human test subjects. Archival materials further show that many scientists were involved, reflecting close ties between academia and the military. Based on extensive evidence, this work explores how Unit 731 was formed and how medical researchers became complicit.