unit731 Share definition Flag Japanese ELITE Bioterrorism unit during World War 2. Also the name of Roguesaints.net's new domain. www.unit731.net Fear will keep them in line. Unit 731 was one of and still is the most feared bioterrorism unit ever. unit731 by Requiem December 30, 2003 0 0 Get merch Get the unit731 mug. Buy Now — $32.95 See more merch
