The sergeants have the keys to the arms lockers and the motorpools and have -by far- the biggest influence over the enlisted men.
My guess is that any attempt to use US troops against Americans would result in about the same results as in 1860: 1/3 would obey, 1/3 would desert, and 1/3 would go over to the other side.
This is the only way to put two opposing armies in the field on our territory, they are warning us right now that that is EXACTLY what they are going to do, and Team Trump had better be ready.
Here's some helpful language:
"Whereas the laws of the United States have been, for some time past, and at the present and now, are opposed, and the execution thereof obstructed, in the states of Virginia, Maryland, the District of Columbia, and others by combinations too powerful to be suppressed by the ordinary course of judicial proceedings, or by the powers vested in the Marshals by law, therefore, I, Donald John Trump, President of the United States, in virtue of the power in me vested by the Constitution and the laws, have thought fit to call forth, and hereby do call forth the militia of the several states, of the Union, to the aggregate number of seventy five thousand, in order to suppress said combinations, and to cause the laws to be duly executed".
This may be what it is going to take. Are they getting ready?