If you go to your local V.A. center (or the V.A. website), you can get paperwork that will allow you to order his military records. Also, if you live in San Antonio, you can go to the Military Personnel Center at Randolph A.F.B. to get his last known address. If you are not in San Antonio, write to them and tell them what you want. Be sure to include all that you know about him, if possible, include his S.S.# If he has died, you can probably get his S.S.# and last location. Good luck.