They will probably go to prison instead, like some of my friends did. Giving military training to people who definitely don't want it can be a bad idea for many reasons.

Unmotivated draftees are mostly used as a workforce. Especially in modern warfare, soldiers without significant training are worse than useless, as the wrong action at the wrong time can compromise the stealth and mission of their unit.

Make someone a slave and give them a loaded gun, what could go wrong?