Service whether military or civilian should not be mandatory, especially military.
Draftees in combat will get you killed. They don’t want to be there; they don’t follow orders well and they are the source of most of the problems.
I a foxhole or on patrol, I want someone who volunteered to be next to me. The draftee will be high on dope or alcohol and you don’t need someone you have to babysit for.
Draftees have served our nation Honorably in war since The Revolutionary War. The exception was possibly the war of 1812 where Daniel Webster spoke up against it and it was not initiated for that war if I read right elsewhere. However up until FDR conscription/draft was only used at war time. FDR pushed for and got the Peace Time Draft. That as such is not needed and was a bad idea like most of the other bad ideas he had.