You are in the military because you volunteered so you could SERVE YOUR COUNTRY.
Suddenly a desperate despot dictator madman forces you to move against your own country's citizens!
You did not sign up for that.
You are appalled by it
YOU WANT OUT
Are you stuck? No matter what must you serve out what you agreed to do even thought it is killing you on every level?
That doesn't seem fair. Changing the rules in the middle of the game. Must you continue to play it? I shall ask.