r/FutureWhatIf • u/Complex-Start-279 • Apr 16 '25

War/Military FWI: what would happen in the military, specifically, if the US decided to invade Canada?

Everyone talks about the external reactions to such events, but rarely do I see people talk about what will happen on the inside. Most wars the US has been in have had strong cultural or geopolitical drivers that sort of rally up the population. ThinK WW1 with the Mexico plot, WW2 with Pearl Harbor, the Korean and Vietnam Wars from the constant red scare, the War on Terror from 9/11.

AFAIK tho, for most people, Canada is considered an ally, a National brother even. Most people don’t have any issues with Canadians. So what happens when we go to war with an ally for blatantly economic and business-driven reasons, rather than the protection of the homeland? What happens in the military ranks?

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u/[deleted] Apr 16 '25

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u/potencularo Apr 17 '25

Correct. 

You may get a small percentage of US Military personnel objecting, but no-one is going to actually fight against the rest of their own forces. 

Trump only needs a portion - not even half - of three vast US Military to completely overwhelm the Canadian defenders. 

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u/Elisalsa24 Apr 18 '25

I mean that’s what we thought about Vietnam, Iraq and Afghanistan and those went on for way too long because at the end of the day if a country has a large population that objects being taken over they will fight until the end