Asking this question in the present tense is a bit confusing, as South Vietnam fell to North Vietnam in 1975, and they have been one country ever since. Was it right? That question was not answered to the satisfaction of everyone at the time, and it could still be debatable today. In my own family, some thought it was right, and some thought it was wrong. Personally, I believe an attempt to save South Vietnam was justified, but I would have sent only volunteers, advisers, Special Forces and the like, who would know the risks and choose to go there to help South Vietnam. I think it was a grave mistake to send large numbers of drafted teenagers to fight a war in which they had little understanding, as became the policy under President Johnson and continued under President Nixon.
Eisenhower sent troops to South Vietnam so they can fight North Vietnam because North Vietnam wanted to take over South Vietnam and they did.
America helped out SOUTH Vietnam. NORTH Vietnam was attacking it.
Air war-North Vietnam Ground war-South Vietnam
Overall it was a battle between South Vietnam and North Vietnam.
To defend against Communist expansion.
The "Air War" was fought over North Vietnam. The "Ground War" was fought in South Vietnam.
We only fought the north. They were the communist aggressers.
North Vietnam=Air War South Vietnam=Ground & Riverine War
The Viet Cong were a cadre of patriot civilians in South Vietnam who were willing to fight for Vietnam's unification. The North Vietnamese Army was assembled and trained in the North, and sent south to fight to discourage and remove the United States and their allies from what they called the 'occupation' of South Vietnam.
US Civil War=North wanted to retain the South Vietnam War=North wanted to conquer the South
The United States didn't fight against South Vietnam in fact they were allies fighting against North Vietnam.
The Communist North Vietnam acting in support and defence of the capitalist South Vietnamese.