Factual error: In the opening sequences of the show, B-17s are over the Ruhr in August 1944, and yet they're being attacked by nothing but yellow-nosed BF-109E's. The yellow nose was discontinued at about the end of the Battle of Britain, and the "E" model was discontinued even before that.
Revealing mistake: Air Force Colonel Owen Crawford and his two personal assistants are poring over classified intelligence files in the Colonel's office. When they start to review a slideshow of photographs, one assistant sets up a projector screen and turns off the office lights as the other assistant switches on the slide projector. Photographic images immediately appear on the screen in the background, but the first assistant is still standing directly in front of the slide projector in the foreground. Not only does he not eclipse the projected image on the screen, but no projected image appears on the assistant's body. Obviously, the images on the screen in the background are projected from another source far off-camera. (00:48:50)