The National Archives (NARA)has a facility in St. Louis that holds all the old Army and Air Corps records. Unfortunately, they had a disasterous fire in 1973. Most but not all records from both world wars and Korea were destroyed. If you google NARA and look around their web site there is information about how to make written requests for personell records. If you go to the Genforum WWII site and do a search. There is a posting with specific instructions. Sorry but I don't have the posting number.