Robert Francis as MSgt. John A. Rand

Dianne Foster as Tanya Clayton

Brian Keith as Cpl. Brady

E.G. Marshall as Father Francis Dolan

Jack Kelly as Slade

Keye Luke as Comrade-Instructor Li Ching

Jerome Courtland as Arkansas

Earle Hyman as Doc Jackson, medic

Richard Loo as Commandant Hsai Tung

Murray Matheson as Comrade Clayton

King Donovan as Pop

Joe Turkel as P.O.W.

Dickie Jones as Jackie

Pepe Hern as Ramírez

Leo Gordon as Pike

Weaver Levy as Meatball

Robert Lynn as U.S. Colonel

George Conrad as P.O.W

Tony McCoy as P.O.W. (uncredited)