I'd agree wholly with SASless. I started to watch the fillum but turned off in the first few minutes when the pilot in the cgi (Mustang?) escorting the cgi Fortresses said, "Germans, let's go get them" in best Commando Comic fashion. I turned on a little later at the point where these inexperienced-in-dogfighting heroes in their P-40s took on a squadron of Bf-109s with predictable results and then went on to shoot up an enemy airfield, which I remember reading by a WWII veteran pilot as near suicide.
The American really don't do humble realism very well.
Hats of to the real red tails, I salute them and their endeavours.