These events had their reaction upon the Thirty-first Division to the north. When the enemy were seen in Mory at 9 A.M. they were upon the flank of the 4th Guards Brigade, which at the same time could see heavy columns massing to the east of St. Leger. The Guards at once dug in a new support switch line towards Ervillers and so kept touch with the Fortieth in its new position. The 93rd upon the left was in the meanwhile heavily attacked in front, the enemy coming on again and again with a powerful support from trench mortars. These attacks were all beaten back by the stout Yorkshire infantry, but nothing could prevent the enemy from working round in the south and occupying Behagnies and Sapignies. The British artillery was particularly masterful in this section, and no direct progress could be made by the Germans. [Sidenote: Sixth Corps. March 25.] In the late afternoon of the 24th the Germans made a new and violent attack upon the exhausted Fortieth Division and upon the 4th Guards Brigade on the right of the Thirty-first. In this attack the enemy succeeded in forcing their way into Ervillers, while the Fortieth reformed upon the west of it, so {30} as to cover Hamelincourt and Moyenneville. The situation in the morning of March 25 was exceedingly critical for the two advanced brigades of the Thirty-first, the Guards and the 93rd, who had not budged from their position. The enemy were now to the right rear, and if they advanced farther northwards there was imminent danger that the defenders would be cut off. As usual the best defence of a dashing commander is an attack, so the reserve brigade, the 92nd, was ordered to advance upon Ervillers, which had already been consolidated by the 91st German Infantry Regiment. The 10th East Yorkshires led the attack and seized the village once again, but the situation was still critical, for the enemy were round the south-west, so that they enveloped the whole right wing of the division, which was stretched to cracking point with every man in the line. Touch had for the moment been lost with the troops on the right. As the Germans poured past the right wing of the Thirty-first they presented a menace for the future, but a most tempting mark for the present, and ten machine-guns were kept in continuous action for three hours upon ideal targets ranging from 300 to 1500 yards. The enemy losses upon this occasion were undoubtedly very heavy, but with fine persistency they kept upon their way, as one-idea'd and undeviating as a swarm of ants in a tropical forest. A thick trail of their dead marked their westward road.