Region
Japan
Japan --
28
United States
28
United States --
26
China --
6
China
5
United states --
3
East Asia --
2
Asia
1
Asia --
1
Asia, Southeastern
1
Asia, Southeastern --
1
Australia
1
Australia --
1
East Asia
1
Foreign countries
1
Japan. Rikugan. Kantogun. Butai, Dai 731 --
1
Korea (South)
1
Korea(Souith) --
1
Korea(South)
1
Korea(South) --
1
Manchuria
1
Manchuria (China) --
1
Singapore
1
Singapore --
1
United Nations
1
Unites States
1