Dan-- If your dad was attached to the 101st Airborne in the Glider INFANTRY he was either in the 327th or the 401st. (325 was strictly 82nd).Glider Artillery outfits had their own sub-numeric designations.
The sequence of campaigns is properly Holland, then the Bulge(Bastogne, Belgium), and then Germany.
I would strongly recommend that you go to the site linked below and post your question with your dad's full name and any additional info you may have.
This 101st site has people all over the world who particularize in the history of that Division and it is likely that someone there can tell you exactly what outfit he was in and when he received his Bronze Star.