Robert Mitchum (Charles), Trevor Howard (Father Collins), Christopher Jones (Major Doryan), John Mills (Michael), Leo McKern (Thomas Ryan), Sarah Miles (Rosy), Barry Foster (Tim O'Leary) more..., Marie Kean (Mrs. McCardle), Arthur O'Sullivan (Mr. McCardle), Evin Crowley (Moureen), Douglas Sheldon (Driver), Gerald Sim (Captain), Barry Jackson (Corporal), Des Keogh (Lanky Private), Niall Tóibín (O'Keefe), Philip O'Flynn (Paddy), Donal Neligan (Moureen's Boyfriend), Brian O'Higgins (Constable O'Connor), Niall O'Brien (Bernard), Owen Sullivan (Joseph), Emmet Bergin (Sean (uncredited)), May Cluskey (Storekeeper (uncredited)), Annie D'Alton (Old woman (uncredited)), Julian Holloway (Major Doryan (voice) (uncredited)), Pat Layde (Policeman (uncredited)), Ed O'Callaghan (Bernard (uncredited))

Winston Ryder (Sound Editor), Roy Walker (Art Direction), Stephen B. Grimes (Production Designer), Jocelyn Rickards (Costume Designer), Charles E. Parker (Makeup Designer), Freddie Young (Director of Photography), Douglas Twiddy (Production Manager) more..., Anthony Havelock-Allan (Producer), Robert Bolt (Screenplay), Norman Savage (Editor), Eddie Fowlie (Location Manager), Ernest Day (Camera Operator), Gordon K. McCallum (Recording Supervision), Roy Stevens (Associate Producer), John Bramall (Sound Recordist), Roy Rodhouse (Electrician), A. G. Scott (Hairstylist), Peter Dukelow (Construction Coordinator), Phyllis Crocker (Continuity), Bernie Prentice (Electrician), Ernie Grimsdale (Sound Editor), Josie MacAvin (Set Decoration), Vic Armstrong (Stunts), Charles E. Parker (Makeup Artist), John Hayward (Sound Re-Recording Mixer), Tony Lawson (Assistant Editor), Charles Frend (Second Unit Director), Linda DeVetta (Makeup Artist), Roy Stevens (Second Unit Director), Eric Allwright (Makeup Artist), Colin Arthur (Makeup Artist), Gordon K. McCallum (Sound Mixer), David Tringham (Assistant Director), Brian Sinclair (Assistant Sound Editor), Gerry Johnston (Special Effects), Michael Hickey (Sound), Bronco McLoughlin (Stunts), Michael Stevenson (Assistant Director), Malcolm Stewart (Sound Effects), Jack Cooper (Stunts) and others.