Region
China --
China
17
Japan --
16
Japan
15
United States --
10
United States
9
East Asia --
3
Asia
2
United Nations
2
ASEAN
1
Asia --
1
Asia, Southeastern
1
Asia, Southeastern --
1
East Asia
1
Europe
1
Europe --
1
Japan. Rikugan. Kantogun. Butai, Dai 731 --
1
Korea (South) --
1
Manchuria
1
Manchuria (China) --
1
Western countries
1
Western countries --
1