America’s History of Aggression Against Canada

Amy Shira Teitel
20 min readDec 4, 2022

We don’t usually think of Canada when discussing America’s military past. But the US has invaded Canada numerous times without ever gaining a foothold in the Great White North. And since the countries share the longest land border in the world at 5,525 miles (8,891 km), border disputes nearly became full-blown military events over the years. And some of them were downright weird!

Before we get into it, we need a little primer on the relevant events in Canadian history.

Oh, Canada!

Amy Shira Teitel

Historian and author of Fighting for Space (February 2020) from Grand Central Publishing. Also public speaker, TV personality, and YouTuber. [The Vintage Space]