You can request his Individual Deceased Personnel File (IDPF) at the following address: U.S. Army Human Resources Command, ATTN: AHRC-PAO (FOIA), 200 Stovall Street, Alexandria, VA 22332-0400. I have gotten IDPF's for my cousins, who died during WWII and Korea. It usually takes about six months to recieve. Included in these files are the date, place and how he died. Some can be gruesome (just a warning).