What IF Donald Trump tries to control the US Military?

I didn't like this interview because it scares me! It's one thing to say that the POTUS has the total allegience of the Military because he's their Commander in Chief..... but what happens (if as laid out in this interview), he insists on breaking the law?

https://www.theatlantic.com/podcasts/archive/2023/12/how-trump-could-manipulate-military/676341/