Guy Madison as Major Carter

Raffaella Carrà as Sara van Kolstrom

Stelvio Rosi as Sgt. Arthur Nolan

Piero Lulli as Colonel Kreuzfeld

Gloria Fernán Osuna as Resistance Girl

Alfredo Mayo as Professor van Kolstrum

Manuel Zarzo as Cpl. John Terrence

Enrique Ávila as Pvt. Thomas Nichols

Carlos Quiney as Sgt. Geronimo Lightcloud

Luis Induni as Patrón de hotel

Fernando Bilbao as Soldado Gilbert Adams