Perhaps I just don't understand the sarcasm.

The individual has an 8-year commitment, fulfilled his active duty stint and was discharged with a 10% VA disability. He still has a reserve commitment and is called up, and at the reporting for duty he will be medically rated as to whether he can or cannot perform. He will be rated with a medical "profile" which will determine if he: 1) is kept on active duty in his military occupational specialty; 2) retrained into a different military occupational specialty commensurate with his medical profile, or 3) released from active duty. That's the system in place for at least the 40+ years I've been associated with the military, and probabgly a lot longer than that. The system really does work, and the military won't take him back if he's so unfit for duty that he can't perform.

What's the problem?