Set just before the outbreak of WWII, this is the story of a test pilot who works for the (unnamed) enemy. Made in 1939, by the time it was released in 1940, war had been declared.
Barry K. Barnes
Peter Thurloe
Joan Marion
Dorothy Houghton
Roger Livesey
Charles Houghton
Basil Radford
Bill Madison
Everley Gregg
Emily Madison
Felix Aylmer
Col. Cairns
Wallace Douglas
Agent Hooper
Henry Oscar
Porter
John Turnbull
Sir Andrew Hamilton
Edward Ashley
Stuart
Santos Casani
Foreigner
Hal Walters
Kingswell
The Right Stuff
Test Pilot
Little Nemo: Adventures in Slumberland Pilot 2
Innerspace
Q Planes
First Man into Space
X-15
The Great Waldo Pepper
Nate and Hayes
Love Is in the Air
Firefox
Shadow in the Cloud
The First of the Few
Jet Job
Tobor the Great
Beyond the Time Barrier
Flyboys
Hornblower: The Examination for Lieutenant
The High and the Mighty