Was he a reservist or active duty (TAR)? Either way
if he was rated over 30% disabled (by the military, not the VA) he should have rated a retirement and got screwed. A good buddy of mine from school was close to getting just a medical discharge from the Army, not retirement, and since he is the happy go lucky type who doesn't want to make waves he was going along with what the Army was trying to do until his dad (retired NG Colonel) knocked some sense into him and he got medically retired after being rated 70% disabled by the Army.