John Wayne
Colonel Mike Kirby
David Janssen
George Beckworth
Raymond St. Jacques
Sgt. Doc McGee
Bruce Cabot
Colonel Morgan
Edward Faulkner
Capt. MacDaniel
Chuck Roberson
Sgt. Griffin
Richard 'Cactus' Pryor
Collier
Walter Soo Hoo
Viet Cong Soldier (uncredited)
Paul Genge
Gen. Thomas (uncredited)
Cliff Lyons
Hugh Parkinson (uncredited)
Walker Edmiston
Lt. Moore (uncredited)
Kenner G. Kemp
Nightclub Patron (uncredited)
Ernie F. Orsatti
Sgt. Don Ross (uncredited)