Our armed forces have taken an oath to preserve, protect, and defend the Constitution of the United States. Any action taken by us or by people who believe as we do would have the same goal.
I think we can depend on our soldiers to uphold their oath, and support any action we might take.
As an army officer, I was trained to follow all orders, legal or otherwise. If I believed an order was illegal, I had the right to challenge it -- after I had executed that order to the letter. I had no right to challenge it beforehand, and such a challenge was mutiny, punishable under the UCMJ.
Our soldiers will follow their Commander in Chief, from the highest ranking general to the lowest ranking enlisted man, with every officer and NCO following up to make sure those orders are followed.
If they aren't, this particular Commander in Chief will order the armed forces to stack arms -- which they will do! -- while non-English epeaking foreign troops enforce the Commander in Chief's will.