The United States' involvement in South Vietnam lasted roughly 20 years. For much of that time, American forces were actively engaged against the North Vietnamese. As the war lingered on and public sentiment turned against the war, the U.S. eventually withdrew in 1973. Within two years, the South Vietnamese government would fall and Vietnam was unified under the Communist regime. That is a very simplistic description of 20 years of conflict. The men and women who served in Vietnam each have a...