Consider a truly universal draft
And in the process, ask why young adults are asked to bear so much of the war burden.
OK, self: why are young adults asked to bear so much of the war burden?
[Waving hand in air wildly a la Arnold Horshack]
Yes, Mr..."Foot" is it?
Yes, self, that's correct. The reason why young adults are asked to bear so much of the war burden is because juveniles are insufficiently mature both physically and emotionally to take on such a burden, and older adults have both a higher prevalency of bodily aches and pains as well as a tendency to have to pee a lot, which makes the task of shooting bad guys much more difficult.
Good answer. You get a gold star Mr. Foot.
[Beaming] Why thank you.