The education board of Iida city in Nagano Prefecture, central Japan, is at loggerheads with local citizens involved in a peace museum exhibit, as they grapple with calls for greater focus on "biological warfare" testing by the Imperial Japanese Army's notorious Unit 731 on prisoners of war.Known officially as the Epidemic Prevention and Water Purification Department of the Kwangtung Army, Unit 731 is thought to have undertaken covert biological and chemical warfare research in China, engaging in lethal experimentation and testing on humans during World War II.The special unit, also known a…READ FULL ARTICLE