The first contingent of the US combat troops arrived in Vietnam to protect the U.S. airbase there from Viet Cong attacks.
The Vietnam War was a conflict in Vietnam, Laos, and Cambodia which started from 1 November 1955 to the fall of Saigon on 30 April 1975.
The conflict was the second of the Indochina Wars and this involved North Vietnam and South Vietnam.
The US sent about 3,500 Marines of the 9th Marine Expeditionary Brigade On March 8, 1965, to Da Nang to protect the U.S. airbase there from Viet Cong attacks.
Learn more about the Vietnam war at https://brainly.com/question/12918391
