101st Airborne Division Association
Company E, 327th Glider Infantry is the unit he was assigned to at the time of his release from active duty. Period. May or may not have been the unit he served with overseas (and probably wasn't). It might be a long shot but you can try the division's veterans association. They have a website that features addresses, phone numbers, etc.
< http://www.screamingeagle.org/http://www.screamingeagle.org/ > (double-click on address to go there)
Found several 327th Infantry websites but they all appear to be maintained by Vietnam veterans.
Try all the above first. If no results, get back with me and I'll see what I can do for you.