The firing of General Brown, and his replacement by a yes-man, seems to be a precautionary step. The military would be an important defense of democracy against any move to declare martial law and turn the U.S. government into a replica of Hungary or Russia. Which seems to be the plan, based on the evidence so far.
Since the midterms are coming in Nov 2026, and the economy going to get a lot worse between now and then, we can expect the Republicans not to maintain their majority in Congress. So a declaration of martial law may be coming soon.
I already feel sorry for our future U.S. President Janet Mills. This will be a big mess for her to clean up four years from now. If we are even still allowed to vote by then.