I have always thought we should have mandatory service. You get to pick between military, healthcare, national parks, maybe some infrastructure building, stuff like that. Everyone serves. Make it somewhat flexible so people can attend college, or pursue trades. Some of that could be done at the same time. We would still need professional volunteer military, this could lead to that for those so inclined so no draft, outside a WW2 situation people completing their service don’t get sent overseas.
I actually think it would help people to have more pride in the country and help teach life skills.
Most important though. If you don’t participate and complete your service you don’t get to vote.