"The Thousand Plane Raid" is a fictionalized account of an actual raid that occurred using 1000 American bombers. It also is in many ways like the movie and TV show "12 O'Clock High"....and focuses only on the B-17, which is odd, as in reality the US built and used even more B-24s which are never shown in movies. I assume part of it might be that there were just more B-17s in flyable shape for films.
Christopher George plays Colonel Brandon, a humorless and intense bomb group leader. He's very tough on his men...presumably because not quite good enough would mean death. In so many ways he's like General Savage from the "12 O'Clock High" film and show...a tough guy who knows what needs to be done and is willing to do it...and do it along with his men.
Overall, this is a pretty exciting and well made film. My only complaint is a common one...the use of stock footage. Now I would NOT expect them to blow up real planes and risk stuntmen's lives...but sometimes stock footage just is bad. In this case, when the Colonel's B-17 crashes later in the movie, it suddenly becomes a B-29 bomber...a much larger and different style plane...and it's obviously NOT a B-17.
Oh, and if want to be more picky, IMDB says 'US Air Force'....but that term was created AFTER WWII. At that point the air service was part of the US Army and was called the US Army Air Corps.