It is OK that they made a sequel concerning Patton's life at the end of the war. Proud of his Anglo-Saxon heritage, he has some identification with the Germans for this reason and because he was strongly anti-communist. Whether he made some of the specific remarks he made here is open to question (it can more easily be proved that he said something than he did not say something, of course). In any event, it is historically true that he made an impolitic remark that, like his soldier-slapping, got him into trouble and transferred away from his military governor position.
But after he is seriously injured (spinal column and paralysis) in the auto accident, the movie drags on way too long, over an hour when he is in a hospital bed. There are reminisces from him and many parties, flashbacks, and many well wishers and helpers. The problem is that nothing really happens of significance, it is just a failed attempt at tear-jerking. Patton himself was fiery, so not a person who lends to easy identification with all the softness. For those worried about being bored, I would stay away or leave halfway through. Clearly, a maximum of 20 minutes was needed to cover this period and the director's insistence on doing much more wrecked the movie, in my book. Adding to the pre-injury time would have been a better decision.