- Paul Newman
- Harry Frigg
- Sylva Koscina
- Countess Francesca Di Montefiore
- Andrew Duggan
- General Armstrong
- Tom Bosley
- General Pennypacker
- John Williams
- General Mayhew
- Charles Gray
- General Cox-Roberts
- Vito Scotti
- Colonel Ferrucci
- Jacques Roux
- General Rochambeau
- Werner Peters
- Major von Steignitz
- James Gregory
- General Prentiss
- Fabrizio Mioni
- Lt. Rossano
- Johnny Haymer
- Sgt. Pozzallo
- Norman Fell
- Captain Stanley
- Buck Henry
- Stockade Commandant
- Horst Ebersberg
- Lt. Gruber
- Richard X. Slattery
- M.P. Sergeant
- George Ives
- Major
- Paul Gleason
- Stockade Inmate
- Robert Perry
- Italian Guard
