Ronald Reagan
— Yank
Patricia Neal
— Sister Margaret Parker
Richard Todd
— Cpl. Lachlan "Lachie" MacLachlan
Anthony Nicholls
— Lt. Col. Dunn
Howard Marion-Crawford
— Tommy
Ralph Michael
— Kiwi
John Sherman
— Digger
Alfie Bass
— Orderly
Orlando Martins
— Blossom
Robert Douglas
— Narrator (voice) (uncredited)
Clive Dunn
— MacDougall (uncredited)
John Gregson
— Recruit in Jungle (uncredited)
Sam Kydd
— Driver (uncredited)
Pamela van Dale
— Burmese Woman (uncredited)
Ben Williams
— Clerk at Hospital (uncredited)