Re: Question about Sgt. York's actions
Chances are no one will ever know the answer to many of these questions to a certainty because the record is too fragmentary. A college acquaintance of mine (now a professor of history) was made curator and archivist of all York's personal documents by his widow, and I can assure you these have been poured over with greatest interest, so it's highly unlikely that anything earthshattering remains to be discovered.
A lot of detail like this has been lost to history, primarily for three reasons. First, believe it or not, is lack of interest. To understand that you have to consider where York lived. Twenty years after WWI ended, the film studio scrapped plans to shoot the opening scenes of
Sergeant York on location because its infrastructure was too primitive to support their production needs. <span style="font-style: italic">Twenty years later!!</span> So York lived out his life surrounded by simple mountain folk, the majority of whom probably never saw a breech loading rifle until WWII and couldn't give a hoot in a holler whether he was carrying a Springfield or an Enfield on that day.
Second, the young Alvin York regarded his military service as something that was necessary but regrettable. When he did speak or write of it, he generally only addressed it in broad terms and avoided any embellishment.
Third, by the time of WWII (and the release of the movie), York had risen to a station where he didn't have to talk to or speak of anything he didn't want to. And he figured he'd already done enough talking about the war so he closed the book on that chapter of his life.
As for the front-to-back business, what I've heard is that York knew that soldiers wearied by seemingly endless trench warfare tended to get careless about seeking cover when they believed they were safely beyond small arms engagement range. Over the course of the war, that range had proved to be about 200 yards. But they would duck double-quick when they saw one of their buddies get smacked in the head by an ought-six. York knew he was well-capable of "cuttin' plumb center" at well beyond that range so he reasoned the same tactic he had used for taking an entire flock of turkey also would work against the Germans, provided there was a group of them foolish enough to expose themselves at, say, five or six hundred yards distance. That supposedly is the origin of the back-to-front tactic. I can't rightly figure how that would apply to a bayonet charge but I suspect myth and legend has crossed lines with G&A's reality.