In Redtails, on the last mission of the movie the Redtails were supposed to escort the bombers only during a part of the flight, they were supposed to rendezvous with other fighter pilots and then break off and return back to base. However, the rendezvous never happened and they continued on. Why? What happened to their relief?
As far as I could find, it was for dramatic effect. After doing some research into the actual mission, it appears as though the real-life mission had them purposefully going with the bombers to Berlin.
Wikipedia's Plot summation for that portion of the movie:
After some digging, I found that this mission was likely a mission that occurred on March 24, 1945:
Both descriptions mention escorting bombers to Berlin, and shooting down MS-262s. However, I couldn't find any mention that this wasn't the original mission plan all along. None of my searches returned results that indicated that there was a failed rendezvous. For example:
In fact, it looks like it would be impossible for them to have performed the mission as shown in the film. The length of the trip required their planes to have larger than normal fuel tanks to make the trip there and back. In the film, they're portrayed as simply happening to have enough fuel for a full trip. In reality, that would not have happened if they were planned to only do a partial escort of the planes. From a document that details some Tuskegee Airmen myths:
So it must have been part of the fiction of the film.