Joe Besser
— Pvt. Joe Marblehead / Homer the Dog (voice)
Dick Wessel
— Sgt. Flint (as Richard Wessel)
Philip Van Zandt
— Col. Phillip Potts
Nick Arno
— Private (uncredited)
Jessie Arnold
— Ma (archive footage) (uncredited)
Jim Brown
— Private (uncredited)
Brian O'Hara
— Master Sergeant Good (archive footage) (uncredited)
Emil Sitka
— Private (archive footage) (uncredited)
Bill Wallace
— Private (uncredited)