Sgt. Alvin York was supposedly using an Enfield when he won his CMH, but I know the Germans definitely weren't using Enfields.
Sgt. York was using a 1917 Enfield but it is a totally different gun than the Lee Enfield. The pattern 14 Enfield was a British attempt to improve on their rifles by going to a Mauser type action and a .280 cartridge.
WWI interrupted the whole thing and the British contracted with American manufacturers to produce the Pattern 14 but in .303 caliber. I am not sure if any of them ever made it to Britain but America had a shortage of rifles in 1917 and had the factories change the pattern 14 to 30-06 and named it the 1917 Enfield. We actually produced more of them than we did 1903 Springfields.