The 746th was organized to support an attack by the 9th Infantry Division on 17 December to consolidate their positions west of the Roer River. However, due to the German counteroffensive in the Ardennes just to the south that began the day before, the scope of the attack was reduced while the division reacted to this new threat. Company A joined the 47th Infantry Regiment when it was detached from the division and attached directly to V Corps to reinforce the northern shoulder of the American lines. Within their own sector, German paratroopers dropped into the rear of the combat units on the night of 16–17 December. By 18 December the division's advance toward the Roer was halted in order to respond to the German offensive. The bulk of the battalion joined the division as they moved southeast to the vicinity of Sourbrodt, Belgium. Company B remained with the 60th Infantry Regiment as they were attached to the 104th Infantry Division to hold the hard-won ground around Eschweiler and Düren. The 60th and Company B rejoined the division on 24 December.