This YouTube movie is awful! The background music drowns out the barely audible commentary, what commentary you can hear is often inaccurate and, as usual most of the flying sequences are from movies made long after WW1.
It does have at least one redeeming feature, however. Much of that footage is from the movie "D-III-88: The New German Air Force Attacks" (1939) where the part of the Royal Flying Corp is played by Bücker Jungmann (with naked landing gear legs). The best bits are at about 0:58:00 into the movie. There is about 4 minutes of very nicely flown Jungmann aerobatics. There are more Bückers elsewhere in the film, but finding them may be painful :)
