I have to leave for work, so answering each of your points is not possible now. Of course soldiers follow orders. Those who don't are unusally punished, but the subject was "What are we fighting for?", not "Are we following orders?"
I won't fault you for using the word 'well'. It's okay.
The Southern volunteer fought to create an independent nation in which he could make his own choices. Men like Sullivan Ballou volunteered to preserve a government that could force other men's obedience to it.