I believe that the faith of Sgt. York allowed him to return to society after the war more psychologically adjusted than Audie Murphy.
It’s interesting that Sgt. York’s faith almost kept him out of the fighting all together.
I cannot recommend the movie highly enough. Not only as a great movie in and of itself - but also as a part of American history. The DVD with commentary is a MUST - they have a brilliant Hollywood War historian and she seems to know a TON of interesting things about EVERYTHING!