Didn't think you were such a statist, clarence. Why not go the full monty and advocate Communism? You can serve the state until you drop.
The military doesn't need men or women right now- I advocate this more for the individuals then the nation though I believe if the individuals are better people or better citizens because of this then of course it helps the nation long-term
So, if you admit that the military doesn't need people, what will they being doing all day? Digging holes and then filling them in? And how do you intend to pay for this? Employing every person in the country will be an expensive project. Even if you enslave them and refuse pay, you still have to house and feed them. And then, once everybody is a veteran, you have to give healthcare and such forever. I don't think you are thinking through the practical consquences of your suggestion.