Capt. Todd Hayden
William Hall
Elaine Burdette
Jane Wyman
Paul Douglas
LeRoy Mason
Capt. Holden
Harry Woods
Capt. Robert Scott
Phillip Trent
Firing Range Radio Operator (uncredited)
Lester Dorr
Reporter (uncredited)
Pat Gleason
Sergeant Who Threatens Mayhew (uncredited)
Eddie Gribbon
Harry Harvey
Cavalry Officer Playing Polo (uncredited)
Carlyle Moore Jr.
Eddie Parker
Spy Ring Member (uncredited)
John Ridgely
Jean Bruce (as Jane Carleton)
Esther Ralston
Girl at Officer's Club Dinner (uncredited)
Frances Robinson
Firing Range Officer (uncredited)
Carl Stockdale
The 'Champ' (uncredited)
Glenn Strange
G-2 Sergeant (uncredited)
Forrest Taylor
Polo Game Timekeeper (uncredited)
Carleton Young
Col. Burdette
Robert Warwick
Frank Denton
Leon Ames
Capt. Don Mayhew
Ben Alexander
Private Timothy O'Reilly
Don Barclay
General A. R. Bowen
Egon Brecher
Charley (Spy-Ring Chauffeur)
Paul Sutton
Capt. Tex Randolph
Jack Mulhall
Director
Joseph H. Lewis
Screenplay
George Waggner
Director of Photography
Harry Neumann
Story
Francis Van Wyck Mason