lets play a game. Name A SINGLE INSTANCE in the entirety of American History, when US federal/government forces, decided en masse to NOT shoot, stop, arrest, or otherwise kill their fellow americans because of whatever reason. Ill start us off with some times the government boys absolutely kicked the shit out of civilian and traitor ass
-The Civil War. This is the big one. The Union army NEVER became smaller than the Confederate one. Union forces had zero issue moving into rebel territory and burning pillaging and otherwising setting those fools straight
-Kent massacre. Bunch of NG guys faced with peaceful protesting americans? fuck em. open fire.
-Waco. Yeah, whole lotta 'defections' from the FBI and ATF when confronted with those freedom lovers. oh wait no, burned the fuckers.
-Ruby Ridge. All american grit versus FBI snipers. guess who lost. Federal forces scoreboarding you patriots all through the 90's.
-Desegregation. Yeah, all those good ole boy southern troops really went over to the other side when the thought of negroes in white schools came about. No, they totally defended and supported local and federal government.
-Bonus Army. Bunch of vets want whats promised to them? fuck em. Bring in the army and send them home packing.
-Homestead strike. little obscure, but its mostly a workers rights thing. State militia rolls in. tells strikers to STFU and GBTW....with bullets. Basically all of the Coal Wars and various labor disputes from the 1890's through to about 1920 were just examples of pissed off americans demanding rights from abusive local governments and businesses, and getting their shit sorted by militia and national guardsmen
You'd be HARD pressed to expect a sizeable portion of the US military to turncoat the government and side with what would inevitably become a hodgepodge of various nationalist/white supremacist groups in the event open revolt broke out. dont forget that almost half the military is not 'white'. So they arent going to run off into the woods with a bunch of red state militia boys to play 'confederate'