March 1965: President Johnson launches a three-year campaign of sustained bombing of targets in North Vietnam and the Ho Chi Minh Trail in Operation Rolling Thunder. The same month, U.S. Marines land on beaches near Da Nang, South Vietnam as the first American combat troops to enter Vietnam.
Approximately 2,700,000 American men and women served in Vietnam. It was the first war in which the US failed to meet its objectives. It was also the first time America failed to welcome its veterans back as heroes. Many veterans were attacked personally by their fellow countrymen, who opposed the war.