Battlefront has a preview up of their upcoming Nuts expansion for Flames of War.
From the preview:
In the central sector of the Battle of the Bulge, the Germans had smashed through the American 28th and 106th Infantry Divisions before approaching the key crossroads town of Bastogne on 19 December. In the meantime the veteran 101st Airborne Division had been rushed from their camp in France to Bastogne to take up the defence. What followed was an epic seven-day struggle with the defending airborne troops besieged by four German divisions.