Marion, that's where the confusion starts ...... we see The Bulge and the Alsace Campaigns as two separate Campaigns.
Although they are linked to each other, they are in fact two Operations;
Ardennes: Wacht am Rhein
Alsace: Nordwind 31 December 1944 - 5 January 1945 followed by Operation Sonnenwende 5 - 25 January 1945.
I do know the Ardennes are not just Bastogne; I roamed the area since 1984 and know perfectly well the different areas of combat.
I even made an unfinished study of the fighting in and around Wltz (Luxembourg) both in December 1944 and January 1945.
The Ardennes Campaign is very well known for the actions of small(er) units.
When the Ardennes Campaign was nearing its end - what offensive action of the Germans was concerned - Operation Nordwind was started in the Alsace area.
So to make it short ....... we're both right. 
Btw, there were also Belgian Fusselier units involved in the Ardennes Campaign.
They guarded fuel depots.
Erwin