He wasn't there for the whole war, but General William C. Westmoreland did lead the war effort and its buildup at MACV from 1964 to 1968. His place in the history of this event is still controversial and among Vietnam Vetrans the mention of his name will split the group into two strongly divergent sides, each ready to fight the war all over again.
Westy was replaced by Gen. Creghton Williams Abrams Jr. (1968 - '72)
Vo Nguyen Giap
Ground commanders: General Westmoreland vs General Giap
As with MOST senior leaders during the Vietnam War, LBJ was a WWII veteran.
See Statistics about the Vietnam War.
my father was stationed in Alaska during the Vietnam war
Approximately 2,594,000 US Servicemen served "in country" during the Vietnam War.
See: List of anti-war organizations.
One of them was Ho Chi Minh