Grace Baldridge is joined by Amir Nikoui, Mary Ignatova and Jack Ruley in another “Campfire Edition” focusing on the “atrocities of war.” The trio discusses Unit 731–a covert biological and chemical warfare research and development unit of the Imperial Japanese Army that undertook lethal human experimentation during the Second Sino-Japanese War. Chinese, Korean, & Russian prisoners of war were subject to experiments, including limb amputations without anesthetics, bubonic plaque injections, and spread of venereal diseases.