Cold war.
North Vietnam and the United States. South Vietnam wasn't the main combatant, because they did NOT conduct the Air War over North Vietnam. The Vietnam War had three categories: US Navy-Riverine War; US Air Force-Air War; US Army/US Marines-Land War.
US Military personnel were in Vietnam from 1955 thru 1975.
Yes
War in RVN (South Vietnam) since 1955. War with North Vietnam since 1964.
Since 1955.
{| |- | The US involvement in Vietnam began in the 60's. The French had been involved in the war for a long time. Vietnam War went forward for a decade. |}
because the russans were allys
December, 1941
Because the russans were are allys
The US has been fighting in Afghanistan longer it was fighting in Vietnam. It is the longest war in US history.
We were at war with Vietnam because they disagreed with us about something.