- Robert Mitchum
- Dick Ennis (war correspondent, International Press)
- Peter Falk
- Cpl. Jack Rabinoff
- Robert Ryan
- General Carson
- Earl Holliman
- Platoon Sgt. Abe Stimmler
- Mark Damon
- Wally Richardson
- Arthur Kennedy
- Maj. Gen. Jack Lesley
- Reni Santoni
- Pvt. Movie
- Joseph Walsh
- Doyle
- Thomas Hunter
- Pvt. Andy
- Giancarlo Giannini
- Pvt. Cellini
- Anthony Steel
- Gen. Marsh
- Patrick Magee
- Gen. Starkey
- Arthur Franz
- Maj. Gen. Luke Howard
- Tonio Selwart
- Gen. Van MacKensen
- Elsa Albani
- Emilia
- Wayde Preston
- Col. Hendricks
- Venantino Venantini
- Capt. Burns
- Annabella Andreoli
- Anna
- Wolfgang Preiss
- Field Marshal Albert Kesselring
- Marcella Valeri
- Assunta
- Enzo Turco
- Pepe
- Wolfgang Hillinger
- Hans (the sniper)
- Stefanella Giovannini
- Diana
- Carmen Scarpitta
- Neapolitan girl
- Vittoria Dal Verme
- Neapolitan girl
- Richard Arlen
- Capt. Gannon
- William Conroy
- German Soldier
- Jed Curtis
- Col. Stelzer
- Giorgia Della Giusta
- Neapolitan girl
- Herbert Fux
- Officer on Phone
- Dante Maggio
- Neapolitan street hawker
- Tiberio Mitri
- MP
- Alberto Sordi
- Mayor of Anzio
- Elizabeth Thompson
- Raffaella
