On April 3 the 4th Battalion moved to Camp B at Vlamertinghe by companies, and on the 8th returned to the trenches, relieving the 1st Battalion Grenadiers as right battalion of the left sector of the Division. There it remained until the 20th, placing two companies at a time in the front line. There was a great deal of work to be done in strengthening and heightening the parapet, which in some parts was in a lamentable condition. On the 17th Second Lieutenant M. H. Ponsonby and Second Lieutenant R. A. Gault arrived. The enemy was very active in this sector, and frequent raids occurred. On the 19th the German artillery began a systematic bombardment of our first and second lines by way of a barrage, while they launched an attack somewhat to the left of the line occupied by the 4th Battalion. At first this attack hardly seemed to affect Nos. 2 and 3 Companies, which were at that time in the front trenches, but when a message arrived from the Brigade-Major to the effect that the enemy had occupied Wieltje in front of the 2nd Battalion Scots Guards, which had held it lightly, it was clear that something had to be done. It afterwards turned out that the enemy had made a determined attack on the Sixth Division, and had taken 600 yards of trench, while a raiding party had got down the trench occupied by the Scots Guards. Lieutenant C. G. Goschen, who was an old hand at this type of fighting, at once sent a strong patrol, under Second Lieutenant Maclear, up the trench to the left to clear up the situation, and if necessary support the Scots Guards. This manœuvre proved eminently successful, and, in spite of the bombs which rained on them the party of Grenadiers carried all before them. In the meantime the Scots Guards ejected all the Germans who had succeeded in penetrating into their trench. There was necessarily some very stiff fighting, but although there were 3 men killed and 24 wounded, of whom 3 died later, the party returned with no men missing. Lieut.-Colonel Lord Henry Seymour afterwards attributed the success of the operation to the coolness and resource displayed by Second Lieutenant Maclear, Lieutenant Goschen, and Captain Blundell. He also praised the marked ability shown by Second Lieutenant Keith and Second Lieutenant Constable in the control of their men under very difficult circumstances.