uncle mikey, were you in the military?
Your argument here makes no sense. You've created the 21 for everyone except those old enough to fight and die for the country, and who have the kind of military ID they don't necessarily get while doing so. That's brilliant.
So, these people would fall into the rubric of serving on active duty, but they'd lack the military ID indicating they're actually on active duty. Sure, they have a set of orders with a control number on them, but it wouldn't seem that bar people would be in the know of what to look for, or even able to verify a control number.
Thank you for your response to what you mistakenly think I said; however, I must point out that it's woefully misplaced as a response to what I actually did write, and its logical necessities.
I'm glad you take such pleasure in impressing yourself.
I would point out to you that anyone who neglects to obtain proper identification to which the are legally entitled sufficient for the purpose they propose to pursue will likely fail to achieve their goal which is to drink a beer that they are legally entitle to drink except for their lack of enabling identification documentation.
I suppose it could work.
Or, the easier solution could be the case: there exists a subset of individuals of the set of all individuals in the military who are both on active duty and lack a DD FM 2A indicating they are on active duty, and they would per force be excluded from your little rubric. Of course, this doesn't even touch upon the fact that all males aged 18 are quite obliged to register with the selective service because they are considered able to serve in their nations wars, but by your logic, not yet sufficiently adult to have a beer.
I lived in europe when I was in HS. Kids started drinking in a bar (very rarely) at the age of 14-15(freshman year). For the ones I knew, none became alcohlics or got DUIs, they all now have college education and some have grad degrees. You don't have the cutoff time at 2am so not that many binge drink since they can take their time... I think it's a pretty good sytem.