- Helmut Berger
- Lt. Kurt Zimmer
- Samantha Eggar
- Annelise Ackermann
- Giuliano Gemma
- Capt. Martin Scott
- John Huston
- Prof. Sean O'Hara
- Stacy Keach
- Maj. Manfred Roland
- Ray Lovelock
- Lt. John Foster
- Aldo Massasso
- Lt. William McShane
- Venantino Venantini
- Michael
- Ida Galli
- Sybil Scott
- Edwige Fenech
- Danielle
- Henry Fonda
- Gen. Foster
- Aldo Barberito
- SS Major
- Rik Battaglia
- French Partisan
- Andrea Bosic
- Mimmo Parnat
- Massimo Bonetti
- German Soldier
- Rosario Borelli
- Radio Operator
- Ermelinda De Felice
- French Bartender's Wife
- Emilio Delle Piane
- Turkish Captain
- Attilio Dottesio
- French Bartender Pierre
- Giuseppe Castellano
- American Paratrooper
- Luciano Catenacci
- British Communications Officer
- Giovanni Cianfriglia
- British Demolitionist Wilson
- Pierangelo Civera
- Gestapo Agent
- Claudio Colombi
- Italian Soldier
- Geoffrey Copleston
- SS General Jürgens
- Mirko Ellis
- Hans - German Officer in Bar
- Andrea Fantasia
- U-Boat Commander
- Tom Felleghy
- American Colonel
- Manfred Freyberger
- German in Danielle's Room
- Marco Guglielmi
- Capt. Fitzpatrick
- Fulvio Mingozzi
- French Partisan
- Franco Odoardi
- Wounded Resistance Man Jean
- Lorenzo Piani
- American Paratrooper
- Giacomo Rossi Stuart
- American Commando Leader
- Lanfranco Spinola
- Spanish Soldier
- Max Turilli
- Gestapo Agent
- Bill Vanders
- Gen. von Arnim
- Karl Braun
- Machine-Gun Sergeant
- Guy Doleman
- Gen. Whitmore
- Luther Fear
- British Officer with Sean O'Hara
- Adolf Hitler
- Self
- Percy Hogan
- American Soldier
- Flaminia Jandolo
- Sergeant Anna Moffitt
- Billy Kerr
- German Soldier
- Helga Liné
- Irene
- Jesse Owens
- Self
- Riccardo Petrazzi
- Partisan Guard
- Mario Piave
- British Soldier
- Patrick Reynolds
- O'Hara's Aide
- Michele Soavi
- Ted Foster
- Robert Spafford
- Gen. George S. Patton
- Orson Welles
- Narrator
