Going back the original photos in the first post... Too bad the GIs didn't go up against the German Wehrmacht from '39-'42....otherwise they'd have their collective butt handed back to them...lucky for them they were up against conscripted teenagers and old men, with no equipment, supplies or air cover, and not the 100 division force that was subdued by Russians, the real victors who won the war for allies not the american...
Well that could be true.
However one could always argue that Nazi cancer would not have spread, if the US army was deployed in the early stages of WWII.
I am sure you are familiar with the proverb "nip the evil in the bud".