They don’t need the military. The police have already been militarized and have zero issue using violence against the populace as has been demonstrated time and time again.
Also respectfully, as a vet, the military is not homogenous and Trump will absolutely find the people in the military that will listen to him and put them in charge
They don’t care about total enforcement. They’ll just use it against their enemies and people they want to take down while protecting their own. Rules for thee etc