On 1 August 1916 47th (2nd L) Division began to move south to join in the Somme Offensive. While the infantry underwent training with the newly introduced tanks, the divisional artillery went into the line on 14 August in support of 15th (Scottish) Division. The batteries were positioned in Bottom Wood and near Mametz Wood, and became familiar with the ground over which 47th (2nd L) Division was later to attack, while supporting 15th (S) Division's gradual encroachment on Martinpuich. Casualties among FOOs and signallers was heavy in this kind of fighting. Between 9 and 11 September 47th (2nd L) Division took over the front in the High Wood sector, and on 15 September the Battle of Flers-Courcelette was launched, with tank support for the first time. The barrage fired by the divisional artillery left lanes through which the tanks could advance. However, the tanks proved useless in the tangled tree stumps of High Wood, and the artillery could not bombard the German front line because No man's land was so narrow. Casualties among the attacking infantry were extremely heavy, but they succeeded in capturing High Wood and the gun batteries began to move up in support, crossing deeply-cratered ground. Casualties among the exposed guns and gunners took their toll, but a German counter-attack was broken up by gunfire. Next day the division fought to consolidate its positions round the captured 'Cough Drop' strongpoint. When the infantry were relieved on 19 September the artillery remained in the line under 1st Division.