Who was the first president to send US combat troops to fight in the Vietnam War?

Lyndon Johnson was the first president to send U.S. combat troops to fight in Vietnam. Earlier presidents, including Dwight Eisenhower and John Kennedy, provided support and military advisers, but Johnson escalated U.S. involvement by deploying combat forces in 1965. The correct choice is Lyndon Johnson.

AI-written and checked against the verified answer.