- Brian Keith
- Capt. Jack Connor
- Helmut Griem
- Kapitän zur See Willi Schluetter
- Ian Hendry
- Maj. Perry
- Jack Watson
- Gen. Kerr
- Patrick O'Connell
- Sgt. Maj. Cox
- Horst Janson
- Lt. Neuchl
- Alexander Allerson
- Lt. Wolff
- John Abineri
- Capt. Kranz
- Constantine Gregory
- Lt. Hall
- Tom Kempinski
- Lt. Schmidt
- Eric Allan
- Lt. Hochbauer
- Caroline Mortimer
- A.T.S. Sgt. Bell
- Mary Larkin
- Cpl. Jean Watt
- Gregg Palmer
- Lt. Berger
- Michael Sheard
- Ingenieur-Offizier Unger
- Ingo Mogendorf
- Lt. Fullgrabe
- Emmet Bergin
- Orderly Johnston
- Barry Cassin
- Guard Jones
- Martin Dempsey
- Colonel
- Alec Doran
- Police Official
- Conor Evans
- Orderly Joss
- Frank Hayden
- Holtz
- Vernon Hayden
- Scottish Dispatcher
- Lamont Johnson
- PT Boat Captain
- John Kavanagh
- Police Dispatcher
- David Kelly
- Adjutant
- Des Keogh
- Guard
- Brendan Matthews
- Guard
- Jim Mooney
- Guard Foss
- Mark Mulholland
- Skipper
- Paul Murphy
- Weber
- Desmond Perry
- Accomplice
- Joe Pilkington
- Police Communications Sergeant
- Noel Purcell
- Ferry Captain
- Robert Rietty
- Various voices
- Robert Somerset
- Guard
- Franz Van Norde
- Dichter
