I have had this photo for several years and have never been able to ID him. Using the Custermen.com website I was able to trace him to B Company, 310th Engineers. He is clearly shown in the company photo in the front center. He is the only officer wearing a Sam Browne belt and may have been the Company Commander, even thought he is a Lieutenant. I'm not sure, but there may have been a "yearbook" for the 85th Division for when they were at Camp Shelby. I will appreciate any information you can provide.
He is in the front row, 2nd from left in this closeup.