It's Only a Bad Drug if the State Doesn't Prescribe It
Note that the State didn't reject him on grounds that he was a psychotic misfit with a sociopathically violent streak in him; he was rejected on the grounds that he lied to the State. That's right. The State that lies as a matter of course to its citizens and that doesn't give a rodent's rectal oriface about whether or not its citizens lie to each other, but woe be unto the lowly citizen that withholds the truth from Big Brother.
No, the only problem the State had with little Eric was that he was taking medication that the State did not administer. Had little Eric joined the gyrine corps as a manic depressive NOT on medication, it would have been happy to mould him into the perfect little savage to let loose against the little brown peoples of the world for as long as he cared to be a menace to them, then send him back home to savage the sheeple of the United States (a la Jeffrey Dahmer, Albert DeSalvo, and other vets with "issues" whom the military just didn't feel like bothering with anymore), whom the powers-that-be care just as little about.
So the lesson, boys and girls, is that if you are a psychotic misfit looking for an acceptable outlet for your antisocial behavior, rest assured that the police academies and the armed services are waiting for you with open arms - as long as you are in your "natural state of mind." Let them worry about the medication.