America lost
The Americans lost the Vietnam War (1954-1975).
no, as far as U.S. wars it was the biggest loss we have had.
The US has officially only lost one war: The Vietnam War.
The North won and the South lost in both undeclared wars; US Civil War & Vietnam.
The war of the rebellion (US Civil War) was, because Americans were killing Americans. Vietnam & the Civil War only divided America; in both wars the north won and the south lost.
Ancient(?) China lost it during a series of little wars.
Couldn't isolate the battlefield.
No. The U.S. lost the Vietnam War, as the communist North Vietnam succeeded in taking over South Vietnam (which the U.S. was allied with), and united the country as one Vietnam.
The communists were victorious in Vietnam.
North Vietnam had to fight against the French and the Americans to gain its independence. The French and Americans were trying to stop the spread of communism to South Vietnam, but the war ended badly with the French and Americans suffering defeat.
Over 50,000 Americans were killed and missing in action during the Vietnam War.