There were a lot of people who did not want to fight but were forced to fight. Again, from the side that claims to be opposed to Slavery.
I should not be surprised to learn that the vast majority of people wanted no part in the war, but only participated because they were forced to do so.
Well, that’s why there is a draft - because people don’t want to get killed. Although, I have read historians who feel that young people, isolated and bored with farm life were very keen to go to war for their state. Certainly, that’s one of the themes of GWTW.