Cast credited on the Italian poster
In addition to the 79 actors credited with images above, the Italian poster for the film includes many more names, however a number of these actors do not actually appear in the film. I have listed the additional actors, omitting those already posted, in the order they appear on the poster (left to right).
Vittorio Sanipoli
Unidentified - Does not appear
Simone Signoret
Unidentified - Does not appear
Sylva Koscina
Unidentified - Does not appear
Dany Paris
as
Caro's girlfriend at the station
Steve Reeves
Unidentified - Does not appear
Eleonora Rossi Drago
Unidentified - Does not appear
Gianni Garko
as
Caro
Tomas Milian
Unidentified
Susan Strasberg
Unidentified - Does not appear
Giacomo Rossi Stuart
as
Austrian soldier
Emilio Pericoli
as
Singing soldier
Renato Rascel
Unidentified
Scilla Gabel
as
The Captain's lover
Scilla's appearance here is cleverly inserted re-used/shared footage from I due colonnelli, released the same year.
Marcello Mastroianni
Unidentified - Does not appear
Nino Castelnuovo
as
The flower seller's admirer
Vittorio Gassman
Unidentified - Does not appear
Luciano Salce
as
German survivor
Francesco Mulè
as
Wounded soldier
David Niven
Unidentified - Does not appear
Terence Hill
(credited as "Mario Girotti")
as
Soldier escorting prisoner
Monica Vitti
Unidentified - Does not appear
English credits
You also have the minimal and quite ludicrous English credits, which only lists 12 actors, of whom 7 do not appear! These credits even manage to add an extra non-appearing actor not included on the Italian poster.
Jim Backus
Unidentified - Does not appear
Thanks to Johan for providing the English credits