There was no resemblance between the two other than that between any two US Military operations.
During WWII the Phillippines was invaded to retake it from the enemy. This involved amphibious landings against armed Japanese resistance.
The US did not invade Vietnam. The US brought its armed forces there at the request of and to assist an existing government, which no longer exists because it lost the war.
US military advisors were training the ARVNs in April 1956 in Vietnam. There was no "US invasion."
The US was an ally of South Vietnam; it was up to South Vietnam to repel the invasion from the north, with massive military assistance from the US (which, of course, ultimately failed).
US, Australia, Thailand, S. Korea, S. Vietnam, Philippines, New Zealand.
New Zealand, US, South Korea, South Vietnam, Philippines, Thailand.
Because the US asked them for assistance.
The US, Australia, New Zealand, Thailand, Philippines, South Vietnam, and South Korea.
US, S. Korea, S. Vietnam, Philippines, Thailand, New Zealand.
US, Australia, New Zealand, Thailand, Philippines, South Korea, South Vietnam; verses North Vietnam and the VC.
The North Vietnam army was invading South Vietnam and Sv asked the US for help in repeling the Communist invasion.
All out war, minus nukes and invasion of the north.
US allies were South Korea, Australia, New Zealand, Thailand, Philippines, and the Republic of South Vietnam.
US, New Zealand, Australia, South Korea, South Vietnam, Thailand, Philippines.