No. The US military has been optimized for CounterInsurgency for the past 30 years. They are absolutely set for this.
They are currently purging out any Regime dissenters via wokeness, DEI and vaccine mandates.
I think the conduct of the Three Letter Agencies is likely to be the direction of most of the US military.
Not to mention that there are 750 overseas bases which are totally out of reach for any domestic dissidents.
The US military is a pimple copmpared to the size and population of the USA.