Personally, I would support compulsory service for all citizens.
Could be a plan that would allow persons to take that service between the ages of 18 and 25, with the choice of three years of civil government service or two years of military service, subject to the needs and assignments of either of those two choices.
We will need to review other things...like VA services. I’m a US Army veteran, but I don’t require access currently to the VA healthcare offerings, for instance. I did take advantage of the educational benefits available to me, and the VA home loan guarantee program helped buy our first home.
I believe a compulsory service program is required to help reclaim nationalism and patriotism, which will be necessary if we are to assure the future of this grand experiment.
Some European countries had mandatory service requirements like that, with a choice between military and civilian duties; I find it an infringement of freedom myself. If they were to require it for young people in that demographic who relied on public assistance, I’d support it.
FWIW, countries with those service requirements end up much more accountable for how they spend their soldiers’ lives. While many have complained about lukewarm support from some European countries during some of our overseas entanglements over the past few decades, they need to understand those governments could never send “draftees” to fight those wars (and we couldn’t, either). That is why when they do send troops, they often send professional soldiers.