William Hall

Capt. Todd Hayden

Jane Wyman

Elaine Burdette

Esther Ralston

Jean Bruce (as Jane Carleton)

Robert Warwick

Col. Burdette

Leon Ames

Frank Denton

Ben Alexander

Capt. Don Mayhew

Don Barclay

Private Timothy O'Reilly

Egon Brecher

General A. R. Bowen

Paul Sutton

Charley (Spy-Ring Chauffeur)

Jack Mulhall

Capt. Tex Randolph

LeRoy Mason

Paul Douglas

Harry Woods

Capt. Holden

Phillip Trent

Capt. Robert Scott

Lester Dorr

Firing Range Radio Operator (uncredited)

Pat Gleason

Reporter (uncredited)

Eddie Gribbon

Sergeant Who Threatens Mayhew (uncredited)

Harry Harvey

Reporter (uncredited)

Carlyle Moore Jr.

Cavalry Officer Playing Polo (uncredited)

Eddie Parker

Reporter (uncredited)

John Ridgely

Spy Ring Member (uncredited)

Frances Robinson

Girl at Officer's Club Dinner (uncredited)

Carl Stockdale

Firing Range Officer (uncredited)

Glenn Strange

The 'Champ' (uncredited)

Forrest Taylor

G-2 Sergeant (uncredited)

Carleton Young

Polo Game Timekeeper (uncredited)