Trump Tells Generals the Military Will Be Used to Fight ‘Enemy Within’

I wouldn't assume that yet. They still haven't been given the illegal orders yet. We'll see what happens when Trump orders the military (not the National Guard, the actual Army) into Chicago and New York.

“I’ve never walked into a room so silent before,” said Trump, who also suggested that officers were free to ignore his comments. “If you don’t like what I’m saying, you can leave the room, of course, there goes your rank, there goes your future,” he jested.

Showing token opposition now accomplishes nothing. They could slightly diminish the fascist photo op, but at the price of losing their opportunity to do something later when it actually matters.

That they all seem to be less than thrilled about the situation is a good sign. That said, I'm not going to hold my breath for any of them to disobey orders or arrest the president. At most, I would expect them to only do the bare minimum to be able to say they followed orders, with perhaps a little bit of malicious compliance where possible. Unfortunately, most of them will probably just pass the illegal orders down the chain of command with a brief reminder to the troops that they also need to obey the law while carrying out those orders.

But if there are people in that room who want to resist, it probably wasn't a great idea to drag them back from all over the world and put them in one place where they can potentially meet up and discuss things offline. Given the situation, I wouldn't be shocked if some of them wanted to make sure that others were on the same page and maybe discuss some hypotheticals.

Either that or they know that a walk out is hilariously less effective than sitting there and taking it, and then beginning to plan a coup after they speech is over.

In military tactics, telegraphing your next move to your enemy is generally inadvisable.

I dunno how familiar you are with the US military recruitment and training process, but they are very much selected for and drilled specifically to follow orders without question. I wouldn't advise getting your hopes up that there's going to be some sudden mass resistance within the military against fascist orders. It's not impossible, but very unlikely.