After recently learning the famous quote "If I had Canadian Soldiers, American Technology and British officers, I'd rule the world" is fake, this got me thinking, did particular nations have any strengths and notable prowess, I keep on hearing and reading that Canadian Soldiers where shock troopers, and came up with the Idea of Stormtroopers during WW1, and during WW2, Canadian infantry was noted for their Infantry prowess, citing Juno beach a lot. Is there any evidence or reports suggesting the Canadians where particularly skilled? Minor Nations have a reputation for producing very skilled infantrymen, with the New Zealanders, Australians, Greeks, Finns, etc. All of which, their combat prowess has been noted by even by their enemy. Is there a reason for this? Or is it just a coincidence or even fake?

Furthermore, does their prowess still hold up, in later conflicts where they where involved. This last question might be to modern, so it's up for grabs if you want to answer it.