I mean, the simplest and most direct order would be to simply alert the militia to begin planning for provisioning, much less actually mustering. By that action alone, Trump would put into motion a long series of events, including possibly making existing military grade weapons available to certain organized units.
But we see no hint of that, therefore it's pretty obvious that Trump really isn't planning on directly confronting the deep state. I will grant that perhaps the grand strategy (if it exists) is to simply spend the 4-8 years re-shaping the courts (as long as the GOP holds the senate). Overturning RvW and the '34 NFA would go a long ways towards restoring the republic; but of course it still means an actual kinetic fight is put off for another day.
Sadly, this may be the only way. What do you think our Founding Fathers would have done with the likes of a Brennan? (I can easily see a Hamilton run him through with a sword).