What did the us do during the Vietnam war?

The US conducted war against the country of North Vietnam, and it's southern communist guerillas in South Vietnam.

TheNewFlamel: I'm basically adding more stuff to the answer above:

We fought against:

- North Vietnam

- Viet-Cong (communist guerrilla group mentioned above)

We bombed the following to some extent:

- Laos

- Cambodia

Cambodia was neutral, but they had communist bases by their border with Vietnam, so America bombed them. They missed.