Region
United states --
United States --
40
United States
26
Japan --
4
Japan
3
Cambodia --
2
China --
2
India
2
India --
2
Indonesia
2
Indonesia --
2
Soviet Union
2
Soviet Union --
2
United states
2
Vietnam
2
Vietnam --
2
Africa, Northeast
1
Africa, Northeast --
1
Asia
1
Cambodia
1
China
1
Developing countries
1
Greece
1
Greece --
1
Korea (South)
1
Korea(Souith) --
1
Korea(South)
1
Korea(South) --
1
Mexico
1
Mexico --
1
Middle East
1
Middle East --
1
Pacific --
1
Pacific area
1
Pakistan
1
Pakistan --
1
Panama
1
Panama --
1
Unites States
1
Vietnamese Conflict, 1961-1975
1