North of the Ancre, in the left section, the task allotted to the two remaining battalions of the 108th Brigade was to assault the German salient on the left of its objective and clear the trenches down to the railway, to establish strong points at B 26, B 24, and B 21, and to occupy Beaucourt Station and the trenches immediately behind it. It was afterwards to occupy the mill on the river bank and the two houses beyond the station. Here the 9th Irish Fusiliers were attacking on the right, and the 12th Rifles on the left. Of the latter battalion one platoon was detailed to attack the railway sap, of which mention has already been made, and one to patrol the marsh. The assault on the "D" line, the final objective, was to be carried out by the 107th Brigade with its three remaining battalions. The Brigade was to advance through Thiepval Wood, following the 109th Brigade, pass through the leading Brigades on the "C" line and attack the "D" line from D 8 to D 9; then to extend its left to D 11. General Withycombe disposed the 10th and 9th Rifles in first line, the former with its right on D 8, the latter with its left on D 9. After the capture of this objective, the 9th Rifles were to extend to D 10 and the 10th to D 9. The 8th Rifles, moving up in rear, were to occupy and hold from D 10 to D 11. The assaulting battalions were to advance, each in eight successive waves, at fifty yards' interval, but the 107th Brigade, passing through to the attack on the final objective, was to advance in artillery formation till compelled to extend.