The thirteenth day saw the counter-offensive preparation phase continue. The final German effort to force the 1st Infantry Division from Elsenborn defences failed, and the 6. SS-Panzerarmee was strategically defeated in its breakthrough attempt. Germans infiltrating in the 3rd Armored Division sector took Sadzot but were driven out.
General Eisenhower and Field Marshal Montgomery met at Hasselt, Belgium, to plan the Allied counter-offensive. At Bra, the 504th Parachute Infantry Regiment repulsed a major German attack, inflicting heavy casualties. VII Corps continued preparations for the offensive toward Houffalize.