Responding to Seagull M: You took this oath … “I, _____, do solemnly swear (or affirm) that I will support and defend the Constitution of the United States against all enemies, foreign and domestic; that I will bear true faith and allegiance to the same; and that I will obey the orders of the President of the United States and the orders of the officers appointed over me, according to regulations and the Uniform Code of Military Justice. So help me God.” (Title 10, US Code; Act of 5 May 1960 replacing the wording first adopted in 1789, with amendment effective 5 October 1962)."
‘Domestic enemies’ were seen on the streets of DC without being properly controlled by the Police. If the President DIRECTED use of the military … seems to me that it fits the above oath. You shoulda learned right away that even if you are given a false order, unless it involves (irreversible) lethal force, you do it FIRST and challenge it later.
Maybe you were only a 2nd Lieutenant ??