There is also the minor skirmish with 800 of the American Fenian Brotherhood in the 1860s. There was also the tension between Washington and Upper Canada when Confederate spies were allowed to operate in the Niagra Falls area.
Not major fights but not exactly totally peaceful.
Now, in the case of an unprokoked invasion of my home and native land I’d consider taking up arms against the enemy, and if absolutely necessary, go south to cause the people to reconsider their nation’s actions .
I know its fun to poke at the Canadians as a bunch of wimps or defensless morons but we are a tough resiliant people who despite our lower population have a very proud Military history.
We have paid more than our fair share of blood in our short time as a nation. With the exception of the boer War I think ever fight we’ve been in was justified and right.
I’m not saying we’d win a stand up fight, we don’t have the numbers, but in a prolonged geurilla action I think we’d put up enough of thorn in the side to make the venture costly.
The biggest thing that would make it hard on the US is that we are physically joined. Actions would spill over into your country. The fight would be taken to your streets as well.
But this is just silly speculation. As posted by Lemur866 there is no reason whatsoever for an action to occur