If that is true about General Mattis being removed from his command than I'm truly troubled. For one I would follow that man to hell doused in gasoline with a stick of TNT up my a**. Also he is truly a leader who can give 2 sh*ts less about the political atmosphere because he understands his job is to lead Marines.
Commanders who are willing need troops who are willing and good luck finding a sizeable amount of those. Troops occupying a city, town, county, etc... And firing on Americans is a violation of the 3rd Amendment of the Constitution we swear to uphold and defend.