memes

Depends on how many states we're talking about and their geographic distribution. 1M isn't enough to hold the whole country. It probably can't even hold New York City. It could probably hold New Hampshire.

Current US military doctrine suggests you need 1 soldier for every 3 people you're trying to occupy. This is especially true when you have to assume every civilian is a potentially armed insurrectionist, and the US has a lot of guns in civilian hands. That said, fascists tend to throw out hard won wisdom like this, and tells the army they aren't trying hard enough. For as much as they drone on about how they're a bunch of tough guys, they are complete shit at actually fighting a war. Here's a former US Army intelligence officer talking about the numbers: https://www.youtube.com/watch?v=zyBIqRunQ5Y

Oh, and while the existing military might follow orders to take over states "in rebellion", they're going to be doing a lot of malicious compliance. The way they did Trump's birthday parade proves it. They 100% phoned it in on purpose.

One of the side effects of Trump trying to move so fast is that he doesn't have time to purge the military and refill it with loyalists. That would take over a decade. Stalin did that to disastrous effect; the Winter War was only a technical win with catastrophic losses, and the later German invasion was barely held back. Hitler didn't really try to purge the Wehrmacht, with the Night of the Long Knives being mostly a purge of their own SS people.

Trump therefore has to rely on already loyal people with guns, which is mostly ICE, local sheriffs, and police. None of them are big enough to hold the whole country, either, or even a major state.