May 18, 2020 Shiro Ishii came up with the idea of having Unit 731 built to keep up with the West since westerns were believed to be developing their own weapons of biological warfare. The Japanese government heavily invested in the Unit 731 facility in order for it to function fully. Masaji Kitano was a commanding officer of Unit 731. Another member of Unit 731 was Yoshimura Hisato, who was a physiologist. In addition, Yasuji Kaneko is also one of the alleged members of Unit 731.