The period 13th to 19th September was spent in the march to the Aisne, where the Division arrived at a time when a certain amount of anxiety was felt by the Higher Command. The 5th French Army on the right, the British Army in the centre, and the 6th French Army under General Maunoury on the left, had pushed the Germans back across the Marne, and on the 14th September the British troops had crossed the Aisne on the front Soissons-Bourg--the I Corps at Bourg, the II Corps at Vailly and Missy, and the III at Venizel. The French right attack from the direction of Rheims and the British attack by the I Corps had progressed much faster than the left, and had reached the heights on the line Craonne-Troyon, astride the famous Chemin des Dames. These were now the objective of fierce attacks by the Germans, and the 6th Division, which had been allotted originally to the III Corps, was put into General Reserve instead, only the artillery joining the III Corps. The units of the I Corps were very tired and weakened after the big retreat from Mons and the subsequent hard fighting on the Marne and Aisne, so immediately on its arrival the 18th Infantry Brigade (Brig.-Gen. W. N. Congreve, V.C.) was ordered to relieve the 2nd Infantry Brigade on the right of the British line. The front taken over ran diagonally from north-east to south-west along the high ground just south of the Chemin des Dames to the north and north-east of Troyon. The East Yorks on the left relieved in daylight on the 19th September the D.L.I., and the West Yorks during the night of the 19/20th September. The West Yorks had two companies in front trenches, one company echeloned in right rear and one company in support. The Sherwood Foresters were in reserve.