Ken Yuasa

Ken Yuasa was a surgeon for the Japanese army who had been a member of the infamous Unit 731 during the Second Sino-Japanese War. During his service in occupied China, he conducted vivisections on Chinese prisoners and civilians, and provided typhoid and dysentery bacilli to the Japanese army for use in biological warfare. Years after the war, he began to realize the extent of the atrocities he and others had committed and began writing, and speaking throughout Japan, about his experiences.