What do people who are not a part of the military care about non-intervention? There is a reason we viliify the draft-dodger who becomes a politician and sends others sons off to war.
Here is a Wikipedia quote
"The persistent old belief that peasants and small farmers gathered to form a national army or fyrd is a strange delusion dreamt up by antiquarians in the late eighteenth or early nineteenth centuries to justify universal military conscription"
I support Rothbard's view on the issue: https://www.youtube.com/watch?v=i3TY5OhUJhw
I find both the notions that conscription=slavery and that taxation=theft can only be held by someone who does not believe in any sort of duty or obligation to one's community, country, nation, or God, and that self-interest must necessarily be one's sole (or at least primary) motivating factor.
I don't know where you got this idea. Most of the largest empires in history - Romans, Sassanids, Ottomans, British, you name it - had a professional warrior class. It wasn't all voluntary, but ideas like draft only applied to non-citizens.
My point is that military service is a responsibility, not a chore foisted upon us. If it were, we would be subjects. But we are not subjects, we are citizens.
Maybe when the country is being invaded. For offensive wars however I don’t know how you can argue this.
And certain offensive wars are for the common defense, usually against neighboring countries over scarce resources, or against other imperial powers.