Two American-army officers are working on a new type of machine-gun for anti-aircraft warfare, when one of them is murdered. The other vows to get the spies that are after the invention and avenge his friend's death.
Capt. Todd Hayden
Elaine Burdette
Jean Bruce (as Jane Carleton)
Col. Burdette
Frank Denton
Capt. Don Mayhew
Private Timothy O'Reilly
General A. R. Bowen
Charley (Spy-Ring Chauffeur)
Capt. Tex Randolph
Paul Douglas
Capt. Holden
Capt. Robert Scott
Firing Range Radio Operator (uncredited)
Reporter (uncredited)
Sergeant Who Threatens Mayhew (uncredited)
Reporter (uncredited)
Cavalry Officer Playing Polo (uncredited)
Reporter (uncredited)
Spy Ring Member (uncredited)
Girl at Officer's Club Dinner (uncredited)
Firing Range Officer (uncredited)
The 'Champ' (uncredited)
G-2 Sergeant (uncredited)
Polo Game Timekeeper (uncredited)