I'm confused, you're from the U.S. right?
Because Woodrow Wilson didn't want to enter WW1, and FDR didn't want to enter WW2... until they were both like "okay, well, we can't keep allowing the British to get their asses kicked like they are."
American Military has the entire 20th century on lock, as far as war goes. We did in WW1 what all of Europe couldn't do against the Germans, and with 1/10th of the man power.