Patton had decided that his communications could support two divisions pushing east, the 45th Division on the coast road and the 1st Division on Route 120. In order to maintain the pressure, he relieved the 45th Division with the fresher 3rd Division and called up Major General Manton Eddy's 9th Infantry Division from reserve in North Africa to relieve the 1st Division. Axis forces were now settled on a second defensive line, the Etna Line, running from San Fratello on the north coast through Troina and Aderno. On 31 July, the 1st Division with elements of the arriving 9th Division attached, reached Troina and the Battle of Troina commenced. This important position was held by the 15th Panzer Grenadier Division. The remnants of the 28 Infantry Division Aosta in the form of four battalions had also been pulled back to Troina to assist in the defensive preparations and forthcoming battle.