Continuity mistake: When the newsreel begins at the movie theatre, we see the back garden of a family home and you can see that the screen on the radar has nothing above it, but when we see a close-up of the radar in the next shot, a sign with the word "Radar" has appeared.
Factual error: When the camera pans to the theatre right after the opening credits, the sign uses the British spelling of "theatre" instead of the American "theater."