Back in 1963.
The US fought for the South against the Northern Communists.
Italy, Germany, and Vichy France.
North Vietnam against South Vietnam allied with US, Australia, New Zealand, Thailand, Philippines, and South Korea.
The USAF & USN fought in NORTH Vietnam (in the skies); the US Army & USMC fought on the ground in SOUTH Vietnam.
Isolationists made little effort in the early (Post Dien Bin Phu) days. It was the anti war protests against the war and the draft that fought against the Vietnam War.
During the Cold War, the US fought with Vietnam because of Communism
The US fought Germany and Japan in WWII. The US fought North Korea and Red China in the Korean War. The US fought Mexico in the Mexican War of 1846. The US fought Great Britain in the War of 1812. The US fought Spain in the Spanish-American War of 1898. The US fought Germany in WWI. The US fought North Vietnam during the Vietnam War. Is America at war with the nation of Iraq?
Both Germany and Japan fought against the US in WW2.Both Germany and Japan fought against the US in WW2.
pfft, who hasn't the US army fought against!?!?
Search and Destroy.
The US fought for the South.
North VN vs South VN; US helped the South.