The Americans met each German counterattack, and the XIX Corps committed the 2nd Armored Division in support of the 30th Division in order to keep the 30th Division’s attack moving and to protect the lengthening north flank of the division. By October 7, the 30th Division had secured Alsdorf and the southern regiment was poised 3 miles from the objective of Wurselen. The German LXXXI Corps had expended all of its resources in its unsuccessful effort to stop XIX Corps’ attack. At that point in the battle the US VII Corps launched its attack.
By October 7, most of the German LXXXI Corps’ reserves were fully committed to the battle. This included all of the mobile elements from the assault-gun brigades, the 108th Panzer Brigade, and the 506th Heavy Tank Battalion. These were impressive formations on paper, but only actually fielded 22 assault guns, four heavy Mark VI (Tiger) tanks, and seven medium Mark V (Panther) tanks. Not an inconsequential force, but only a fraction of what the unit titles represented. It was roughly the size of a weak American armored combat command. On October 5, von Rundstedt released his theater reserves, the rebuilt 116th Panzer Division and the 3rd Panzer Grenadier Division, both divisions under command of the I SS Panzer Corps headquarters, to enter the Aachen battle. The panzer division, though not at full strength, was equipped with 41 Mark IV and V medium tanks. Both divisions had their full complement of infantry, artillery, and antitank guns. It was a significant counterattack force but would take several days to enter the battle.
On October 7, the VII Corps’ 1st Infantry Division occupied positions on the west, south, and east sides of Aachen. The Germans were supplying the city garrison along two highways which entered the city from the north. When the 30th Division captured Alsdorf on October 7 they captured one of the two highways leading into Aachen, leaving the German LXXXI Corps a single line of communications and supply into the city. The 1st Infantry Division was arrayed with all three of its regiments on line over a 12-mile front. From east to west the regiments of the division were aligned with the 16th Infantry Regiment west of Stolberg, the 18th Regiment in the suburbs just east of Aachen proper, and the 26th Regiment bending the line south along the perimeter of the city. The 1st Division’s line was filled south and west of the city by 1106th Combat Engineer Group whose engineer battalions were in the line occupying foxholes as infantry.
In the darkness of the morning of October 8, the 18th Regiment spearheaded the 1st Division’s attack to complete the encirclement of Aachen. The 16th Regiment would guard the flank of the 18th Regiment and link the division to the 3rd Armored Division defending further east in Stolberg. The 26th Regiment’s 1st and 2nd battalions would remain in position facing downtown Aachen. The 18th Regiment’s objective was a series of three hills which dominated the approach into Aachen. The attacking companies were led by special assault squads armed with flamethrowers, bangalore torpedoes, and explosive satchel charges, and specifically trained to attack German pillboxes and bunkers. In addition, a company of mobile tank destroyers and a battery of self-propelled artillery guns supported the regiment by taking the bunkers under direct fire as the assault teams closed in. Eleven artillery battalions fired in support of the assault. In 48 hours the regiment succeeded in taking all of its objectives with very few casualties. The assault teams, supported by fire from tanks, tank destroyers and direct fire artillery, closed in on the bunkers under the protection of a heavy artillery barrage. As soon as the artillery lifted, the bunkers were attacked before the defenders could recover. In this manner the first two objectives were taken. The final hill was captured by a night assault during which the US infantry infiltrated around the German bunkers and occupied the crest of the hill in darkness. The next morning the Americans mopped up the German positions from the rear. By October 10, the 18th Regiment was firmly in position north of Aachen and awaiting the linkup with 30th Division attacking south from the north. The attacks of the 1st Infantry Division left only one narrow corridor into Aachen in German hands. As the 18th Regiment consolidated its new positions, the Germans ordered the theater reserves, the 116th Panzer Division and 3rd Panzer Grenadier Division, to counterattack at Aachen.
The German reserves began positioning for their counterattack on October 10. The first attack took place on that day against the 30th Division, and included elements of the 116th Panzer. By October 15, the 3rd Panzer Grenadier was in position to attack. The attack came early in the morning and was not aimed directly at the 18th Regiment but further east, at the left flank of the 16th Regiment which had not participated in the attack to close the circle and was therefore rested and in good defensive positions. The Germans attacked in the early morning with two Panzer Grenadier regiments supported by 10–15 Tiger tanks against a single US infantry battalion of the 16th Regiment. However, the Americans were prepared and as the German infantry advanced across open ground, six American artillery battalions laid down a preplanned barrage on the exposed infantry. The artillery stopped the German infantry but the Tiger tanks rolled into the American positions and began firing on the foxholes from point-blank range. American artillery continued to pour into the German attackers as well as work back into the supporting positions preventing reinforcement and the bringing forward of supplies and ammunition. The US artillery also fired on several of its own company positions, while the infantry hugged the bottom of their foxholes, to prevent the Germans from overrunning the battalion. Air support arrived in the form of a squadron of P-47 fighter bombers in the early afternoon. The aircraft strafed the exposed German troops and finally broke the German attack. Though the American infantry could do little to stop the German tanks, the American artillery completely demolished the German infantry attacks and the German tanks were loath to advance without infantry support. That night the Germans attacked again with the same result. The attacks were broken up by heavy artillery fire even as they reached the US positions and the infantry fought hand to hand. By October 16, the 3rd Panzer Grenadier division had lost a third of its strength in attacking the lone US battalion and withdrew to regroup. Thus ended the most dangerous threat to the eastern US positions.
As the 1st Infantry Division attacked and then defended against the German counterattack, the 30th Division began its attack south from Alsdorf to link up with the 1st Division. The division attacked with all three regiments on line. The 117th Regiment in the north attacked to further establish the northern flank and protect the regiments further south. The 120th Regiment in the center attacked to secure high ground northeast of Wurselen and thus dominate approaches to the town from the north and east. The attack of the 120th would support the attack of the 119th Regiment which would attack southeast into the northern part of Wurselen, the division objective. Control of Wurselen would effectively close the last route into Aachen and put the 30th Division approximately a mile from the westernmost element of the 1st Division’s 18th Regiment. Patrols would seal the linkup and close off German access to Aachen.
The attack to link up began inauspiciously on October 8 when the northern 117th Regiment attacked headlong into the German counterattack made by Mobile Group von Fritzschen, a hastily assembled but potent organization formed by LXXXI Corps around the 108th Panzer Brigade. The German force included numerous halftracks, several infantry battalions, Panzer IVs and Vs of the brigade, and Tiger tanks of the ubiquitous 506th Heavy Tank battalion. The objective of the mobile group was to recapture Alsdorf. Though the Germans were beaten back with severe losses by the 117th Regiment, they were successful in stopping the attack of the 117th Regiment. During the night the German infantry reverted to the defense, the 506th Tiger tanks moved south to join the attack against the 1st Infantry Division on the opposite side of Aachen, and the 108th Panzer Brigade moved south to continue the attack to expand the corridor into Aachen. On October 9, the 108th Panzer Brigade attacked again but ran into the attack of the 120th Infantry Regiment in the center of the 30th Division line. The Germans successfully blocked the American attack and seized the town of Bardenberg.