Later in the morning when news was received of the severe odds against which the gallant Marquis line garrison was struggling, the remainder of D Company was ordered to bomb up Ouse Alley to try to join hands with Major Phillips and thus complete the defensive flank. At the same time a carrying party was detailed from Headquarters to carry S.A.A. to the front line should D Company succeed. The place of D Company in Bow Trench was taken by two platoons of the London Scottish placed at Lieut.-Col. Marchment's disposal.

The bombing attack was pushed forward for some 400 yards. Enemy opposition was not very severe and about a dozen were killed. The Germans were, however, continuing to press forward over the open from the right and it seemed likely that D Company would get cut off. A block was therefore made in Ouse Alley which was held by a few men, while another small party manned the firesteps to the right to engage the advancing enemy. The remainder of D Company moved over the open in the valley north of Ouse Alley towards Boyne Dump to carry S.A.A. to the Marquis line, taking full advantage of the ground.

By 11.30 a.m. the situation of the Marquis line troops had become precarious in the extreme. The Germans in Oppy Wood were being reinforced and were developing a considerable volume of fire from that direction. The right and right rear of the position were almost enveloped and an attack was being launched against the left flank. Bombs and ammunition were giving out. It seemed clear that further resistance could only lead to useless loss of life. Influenced by these weighty considerations Major Phillips, after a consultation with his senior officers, decided to try to save the remnants of the garrison by a withdrawal to the Red line. The only available trench for withdrawal, Ouse Alley, was, however, already occupied by the enemy in rear of the position, and the valley from Boyne Dump on the left offered the only loophole of escape from the closing pincers. Lieut.-Col. Marchment writes of this withdrawal:

The withdrawal was witnessed by myself from my headquarters. I watched it through my glasses. It was carried out in a very steady and orderly way, the men leaving in groups of about a dozen. Although exposed to heavy fire from the front and flanks, they made excellent use of the ground and had few casualties.

The men of D Company, who were meanwhile carrying S.A.A. up to the Marquis line, met the survivors returning and covered their withdrawal.

It is hard to find adequate words in praise of this gallant defence and skilful and well-timed withdrawal. All ranks alike behaved with the greatest spirit under very trying circumstances.

A great loss was suffered in this defence in the capture by the enemy of the Regimental Aid Post. Capt. Maloney, the M.O. was a most popular man in the Battalion, and Sergt. Rossington and the two orderlies, Palmer and Simpson, had all done excellent work. By an irony of fate 2/Lieut. Morris, who had done such good work in the defence of Wood Post earlier in the morning, was hit later, and was having his wounds dressed in the Aid Post when it was captured.

Major F. A. Phillips who, at Forward Headquarters, was in charge of the whole defence of the forward system, did excellent work. He was continually up and down the lines encouraging the men, and was able to keep Rear Battalion Headquarters constantly in touch with the rapid changes in the situation.

The enemy was now in great force in Viscount Street and was beginning to bomb heavily down Ouse Alley, while he showed increasing signs of strength on the ridge to the right of that trench. The party of D Company in Ouse Alley was therefore withdrawn as soon as the survivors of the Marquis line garrison had reached Bow Trench, to avoid the risk of being cut off. Later the enemy appeared in great strength against the block in Ouse Alley forward of Bow Trench. This block was defended by a "slit" cut in the side of Ouse Alley which was covered by a Lewis gun post in Bow Trench and seven of the enemy were killed by Lewis gun fire.

As soon as the Battalion was concentrated in Bow Trench and the Red line, the artillery barrage was dropped to a line about 400 yards in front of Bow Trench, and arrangements were made to increase it to intense should the S.O.S. signal be sent up from Battalion Headquarters.