while admittedly far from the best Hollywood effort of the period, it is interesting to note that "A Yank in the RAF" was produced and released well before the U.S. entered World War II. Although legally neutral, there was little doubt in which direction Hollywood's sympathy lay at that time, as well as that of the majority of the American people. President Franklin Roosevelt was doing all he legally could to enable supplies to reach Britain and France. Nevertheless, there did exist a highly vocal and politically influential movement to keep the nation out of the war, for whom the famous aviator Charles Lindbergh served conspicuously as spokesman. Those "Isolationists" were impelled not so much by a desire to preserve peace as they were by a desire to prevent the U.S. from aiding the European democracies against Nazi aggression, and they denounced films such as "A Yank in the RAF" as provocative propaganda.
While most of the film is Hollywood fiction there are a few things in it that actually did occur. An example is the episode at the beginning of the movie about landing American-built planes on the US side of the Canadian border and then towing them across the border on their wheels. Absurd as that may seem it actually did happen, the screen writers did not make that up! In addition, while most of the movie was produced on the Hollywood sound stages it does include some footage filmed early in 1941 on RAF air bases in Britain, using real RAF aircraft and personnel.
A typical Hollywood touch of the period is the depiction of RAF Lockheed Hudson bombers. In fact large numbers of Hudsons really were exported to Britain at that time, although the RAF actually employed them as maritime reconnaissance aircraft, not for bombing missions. However, since the planes were manufactured at the Lockheed plant located near Hollywood, Hudsons were readily available for use as movie props, so they frequently appeared in Hollywood movies to depict RAF bombers.
