While Ninth Army's advance was successful, at the beginning of December VII Corps had just left the Hürtgen Forest, was still short of the Rur and had taken heavy casualties. For the upcoming conclusion of the offensive, 1st Infantry Division was replaced by 9th Infantry Division and 4th Infantry Division by the 83rd Infantry Division. After a deliberate break for reorganisation, the attack was resumed on 10 December towards the Rur and the key city of Düren. German manpower at this point was very low with the defense relying mostly on artillery support. In the north 104th and 9th Division, assisted by the 3rd Armored Division, didn't face much resistance. The 3rd Parachute Division and especially the worn out 246th VGD were not able to offer serious resistance. After four days 104th Division was at the Rur. The same was for the 9th Division. During the fighting, 3rd Parachute Division was replaced by the hastily assembled 47th Volksgrenadier Division.