Alan LaddJohn Martin / Lt. (j.g.) Philip Masson, U.S.N.R. / Philippe Martine Geraldine FitzgeraldMiss Ellen Rogers / Madame Elaine Duprez Patric KnowlesCmdr. Brady John HoytCol. Paul Meister Gloria Saunders(W)omen's (A)rmy (C)orps Radio Operator Mary Richard WebbFrank Schmidt (O)perational (S)upport (P)ackages, (M)aterial, Maintenance, Management, U.S.N.R. / Parker Richard BenedictRobert Bouchet, Tech Sgt., A.U.S. / Albert Bernardi Harold VermilyeaAmadeus Brink Don BeddoeRodney "Gates" Parrish / Raoul Josse Egon BrecherMarcel Aubert Joseph CrehanGen. Donovan Julia DeanMadame Prideaux Dorothy AdamsClaudette (uncredited) John DehnerGerman Radar Captain (uncredited) Frank FergusonElectronics Engineer (uncredited) Leo SchlesingerGerman Soldier (uncredited) Carl R. BotefuhrAmerican Soldier (uncredited) George BruggemanMP NCO (uncredited) Haldane DouglasArt Direction Stanley J. SawleySet Decoration Lionel LindonDirector Of Photography Mary Kay DodsonCostume Design Wally WestmoreMakeup Supervisor John Francis MurphyAssistant Director Daniele AmfitheatrofMusic Harold LewisSound Recordist 
