Red Tails mostly has the feel of a few effects guys wanting to play with the CGI toolbox and create some WW2 aerial dogfights and being given play money by George Lucas to do.........then marrying those sequences to the story of The Tuskegee Airmen to give the sequences a reason to exist.
Although the dogfights and attacks are well done with beautiful planes gleaming through the skies and exploding in battle the script is pretty poor and regrettably so are the performances. It has the adventure serial aspirations of Indiana Jones and Star Wars but with a less able director at the helm it doesn't really become more than a one time watch.
Which is a shame, because there is a glimmer of a much better film buried away deep down at times. It just never becomes fully developed in Red Tails.