* Leader: Ho Chi Minh
* Capital: Hanoi
* Population: 17 million
* Military: 1.2 million troops
South Vietnam
* Leader: Ngo Dinh Diem
* Capital: Saigon
* Population: 12 million
* Military: 600,000 troops
United States
* Leader: John F. Kennedy, Lyndon B. Johnson, Richard Nixon
* Capital: Washington, D.C.
* Population: 190 million
* Military: 550,000 troops
Other Countries
* Australia
* Canada
* New Zealand
* South Korea
* Thailand