In this position the troops engaged parties of the enemy massing for attack successfully; but the exhaustion of the men had become such that they could no longer offer a protracted resistance. They had been in action continuously since the morning of 21st March; and at the end of five days, in which the fighting during the day and the intense cold of the nights had denied to them any real rest, their vitality was at its lowest ebb. The remnant of the Division was thus left still facing the enemy, its three brigade headquarters just in rear of the fighting line still in the same order of battle in which they had begun the engagement, but their fighting efficiency was gone. With no British troops on their right nearer than Albert, there was no other alternative left but to break off the engagement and withdraw. Accordingly orders were issued for the Division to concentrate at Colincamps, where Divisional headquarters had opened at 4.35 P.M. The withdrawal of all that was left of the Highland Division along the road from Puisieux to Colincamps was a melancholy spectacle: a long line of men and horses, tired and exhausted almost beyond the limits of human endurance, dragging themselves along, many with undressed wounds. The men fell back in groups, not as formed bodies, but not as in a disorderly rout. Every man retained his arms and equipment, and in spirit would have taken up any line ordered and continued the struggle; but in their acute stage of exhaustion further effective resistance was out of the question, and so was not asked of them. The total casualties sustained by the Division in this action were 219 officers and 4696 other ranks. Of these, the infantry losses amounted to 157 officers and 3744 men. Assuming that the nine battalions of infantry each went into action 600 strong, excluding transport drivers, &c., it will be seen that out of a total of 5400 officers and men only 1500 survived. These figures in themselves show the nature of the fighting. The casualties in officers were also, as is always the case, heavy. Of the 10 commanding officers of the infantry and pioneer battalions, 3 were killed and 3 wounded. [Illustration: MAP X. THE GERMAN OFFENSIVE: POSITIONS OF 51ST (HIGHLAND) DIVISION, 24/26TH MARCH 1918.] Not only had the men offered a magnificent resistance, but their commanders had handled them admirably. In spite of the fact that after the first few hours of the engagement one or more flanks had at all times to be defended as well as the front, the enemy succeeded in cutting off no considerable body of troops; and yet no withdraw a took place until the close of the action, except in close contact with the enemy.