Canal Zone

Chester Morris

'Hardtack' Hamilton

Harriet Nelson

Susan Merrill

John Hubbard

Harley Ames

Larry Parks

Recruit Kincaid

Forrest Tucker

Recruit Madigan

Eddie Laughton

Recruit Hughes

Lloyd Bridges

Recruit Baldwin - Insurance Man

George McKay

'Mack' MacNamara

Stanley Andrews

Cmdr. Merrill

John Tyrrell

'Red' Connors - Mechanic

Stanley Brown

Pilot Jones

John Shay

Henshaw - Co-Pilot

Hugh Beaumont

The Radio Operator (uncredited)

Louis Jean Heydt

Ralph Merrill (uncredited)

James Khan

Man Delivering Monkey (uncredited)

Arthur O'Connell

New Recruit (uncredited)