During these operations, 2nd Lieutenant R. Scott, 256th Brigade, B.F.A. (since killed in action), observed a party of the enemy digging-in close to the river bank. He at once sent a runner back to his battery to ask for a single gun to be sent forward. He then selected a position for it, and made all arrangements for opening fire on its arrival. The gun came into action at 5.30 P.M., and fired ninety-four highly-effective rounds at close range, causing many casualties, and remaining in action for three hours. This and many other cases in which a bold use was made of the artillery considerably strengthened the infantry's powers of resistance. During the night of the 10th orders were received for the Division to extend its front to a point 400 yards north of Lestrem, two companies of the 7th Black Watch being sent forward to take over the additional frontages from the 50th Division. Meanwhile the 61st Division was moving forward in rear of the 50th and 51st, to ensure that no gap should exist between their flanks. Two battalions of the 61st Division, the 2/6 Warwicks and the 1/5 D.C.L.I., were to come under orders of the 51st Division on their arrival. For some time before nightfall the enemy had been observed collecting, obviously for a renewal of the attack; the artillery had in consequence been harassing all the approaches to the river Lawe from the east. Shortly after dark a heavy attack was launched from the village of Fosse northwards. At Fosse post the enemy managed, after a short struggle, to drive in the north flank, the remainder of the garrison being compelled to fight their way back to the Fosse Bridge. They, however, resisted the enemy's attempt to advance with such vigour that they were able to withdraw in good order, cross the bridge, and successfully destroy it after they had crossed. In the chord line Lestrem post was also rushed soon after the opening of the attack. The enemy, having thus gained a lodgment in the chord line, developed a strong series of attacks northwards and southwards. In each case he met with some success; to the north the chord line was cleared as far as the northern outskirts of Lestrem, but here he was brought to a standstill by the 7th Black Watch. To the south he reached the village of Fosse, where a defensive flank formed by the 7th Gordon Highlanders held its ground, and stopped his further advance until midnight. The defenders of this flank, after a gallant resistance in the dark for over three hours, were finally driven back on to a party of about 150 of King Edward's Horse and the 5th Seaforth Highlanders. Here the enemy was again checked, the troops maintaining themselves against several attacks until the pressure became too much for them, and they were driven back on to the Zelobes-Croix Marmuse road.