Telly Savalas

as Harry Morgan

Aldo Ray

as M.Sgt. Prior

Robert Culp

as Sly Wells

James Mason

as Ernst Furben

Günter Meisner

as Schmidt

Adrian Hoven

as Dr. Maar

Wolfgang Lukschy

as Reinhard Holtz

Charles Korvin

as Peter Dohlberg

Constantine Gregory

as Col. Kosnikov

Richard Warner

as Wilhelm Schlager

Don Fellows

as U.S. Colonel

Doris Kunstmann

as Erika

Lorna Dallas

as Meredith Morgan