Beth, I am a hobbyist who enjoys studying WWII, and sharing history/research info with other amateurs. Until you receive a response from an expert researcher, or until you secure the services of a professional, here is some info you might be able to use. Some are resources I have used researching my own family, others are those I have only read about, or found online. Please be sure to verify all to your own satisfaction.
The ABMC and National Archives enlistment database both show his army serial number as 20402908.
With his name, rank, and this serial number you may be able to get records that will be of interest to you.
You may be able to get his personnel record from the National Archives (if it wasn't one of those lost in the disatrous 1973 fire). Info on how to do so can be found at this site:
Also, you can send for his Individual Deceased Personnel File (IDPF). As others in this forum have addressed, the info found in an IDPF can be graphic. If you pursue this resource, you should be prepared for that possibility. My limited experience indicates that the amount of info found in an IDPF varies widely, from case to case. Send your request to: US Total Army Personnel Command ATTN: TAPC-PAO (FOIA) 200 Stovall Street Alexandria, VA 22332-0404 Be sure to cite the Freedom of Information Act in your request. I am told it can take up to 6 months to receive an IDPF. My experience has been in the 4 month range.
Finally, a site devoted to the 8th ID that may have info or resources you could use: