Perhaps pedantic. But the comment I was replying to specifically framed WW2 as "a war with the US" and I've had foreign friends, such as in Canada, who have commented on America's tendency to talk like we singlehandedly won that war.
I don't think "war with the US" was meant to imply "A war in which America was on it's own and did everything"; that's a cynical read of it. A less cynical read would be that "war with the US" means "war in which the US was a participant."
Germany did declare war with the US, hence there was in fact a war with the US. Of course, Germany was also at war with lots of other people. All Americans are taught that in schools. It's called a World War for a reason and people do understand that, even when they're going out of their way to mention it. If Americans don't mention Canadian participation much it's simply because they don't talk about Canada much in the first place. It's not because they're unaware that Canada participated in the war. Canada is a commonwealth country, of course they participated in the war. Everybody here knows that.
