Ask yourself a question, with generals like Milley and VPs like Pence, how many would have followed his lawful orders? Remember, Trump in his last days also had to fire a general who wanted to stay in Afghanistan. In his last year he also had to fire a Navy Admiral who wanted to go after that Navy Seal (Gallager I belive his name was) that Trump had specifically told him not to prosecute and whom he later pardoned.
The military brass wanted him gone. Like in every coup, both sides calculate who is on their side and who is against him. Trump knew he couldn't pull it off.
Before anyone says I'm some Q supporter or TDW fan club member on hopium, I'm not. And if you're coming here to say Trump was all an elaborate ploy or ruse by the deep state, you're brain dead.