It's hard to get a military to invade its own country, harder to get them to keep doing it, and harder yet to keep the whole apparatus supplied in the process.

It's hard to get a military to invade its own country, harder to get them to keep doing it, and harder yet to keep the whole apparatus supplied in the process. And the waves of mass desertions tend to come with military hardware attached. The most serious threat to an American insurgency isn't the US military, it's the police. And the police don't have F-35s... yet.