On February 15 the Division was relieved by the 55th Division and withdrawn to 1st Corps Reserve in the Busnes—Burbure—Fouquieres area, with D.H.G. first at Hinges and later at Labouvriere. The divisional artillery were relieved a few days later, but the pioneers and the sappers remained at work in the line during the whole of the Division’s period of rest. The billets in the rest-area were good, sports were encouraged, and concerts held in the local halls. Training was carried on vigorously. Suitable ground for musketry and field work existed in the divisional area, and full use was made of it. The training always had in view open and semi-open warfare, and it included the hasty occupation of defensive positions in depth, counter-attacks on small and large scales, the use of ground for manœuvre, and of different weapons in attacks on strong points. This training proved most valuable in the operations following upon the enemy offensive in March. The Division also provided large working parties for work on the rear lines of defence within the Corps area. Shortly before the Division was relieved it had received its pioneer battalion, the 1/7th Northumberland Fusiliers, transferred from the 50th Division. This battalion, commanded by Lieut.-Colonel Liddell, D.S.O., had been given little time to carry out its reorganization from a four-company infantry battalion to a three-company pioneer battalion before being set to work on the 1st Corps defences. The territorial spirit is strong, and the Northumberland men did not conceal their chagrin at having to leave the division in which they had won renown at High Wood and elsewhere, but they soon threw themselves into the work and play of their new division with such zeal that they rapidly won popularity and a reputation for great courage and efficiency. Their work was of the greatest value to the Division, both when resisting the German onrush, and no less when the tide turned. They also showed much prowess in all games and sports. [Sidenote: _Reorganization_] A more extensive reorganization had now to be made. So great had been the drain upon the man-power of the empire that it had become necessary to reduce the establishment of infantry brigades from four to three battalions. A number of officers and men of the 6th Lancashire Fusiliers, the 4th East Lancashires, and the 9th Manchesters were posted to other battalions of the Division, and the remainder transferred to the 66th Division. As the 126th Brigade thereby lost two battalions, the 8th Manchesters were transferred to it from the 127th Brigade. The brigades were then made up as follows— The 125th Brigade— 1/5th Battalion Lancashire Fusiliers 1/7th ” ” ” 1/8th ” ” ” The 126th Brigade— 1/5th Battalion East Lancashire Regiment 1/8th ” Manchester Regiment 1/10th ” ” ” The 127th Brigade—