On June 1 the 2nd Guards Brigade proceeded to Volckerinchove, where it marched past Lieut.-General Lord Cavan, the Corps Commander, and Major-General G. Feilding, the Divisional Commander. In order to try a new method of attack, a complete representation to scale of the German trenches revetted with sand-bags was constructed, while the British line was also roughly indicated. The assault on the German trenches was then practised on the following lines: the assault was to take place in five waves, the fifth wave being a carrying company, provided by a battalion other than the actual assaulting battalion. The two leading companies were to assault in two waves, the second following about fifty yards in rear of the first. These two waves were to cross the German front-line trench without getting into it, and push on to the objective, roughly speaking, the German third line. The third wave was to pass over the German front line and take the German second line, which was to be consolidated. The fourth wave was to take and consolidate the German front line. Strong bombing parties were to be placed on both flanks of all companies, with centre bombing parties dispersed roughly opposite the German communication trenches. Bombing parties of the two leading waves were to establish blocks in the German communication trenches, while the bombing parties of the rear waves were to clear the communication trenches forward and get into touch with the two leading waves. All the men were to carry two Mills grenades and four sand-bags, tucked through the web equipment in front, and every third man was to carry a shovel slung. The R.E. material and trench-mortar ammunition was to be carried by the fifth wave. At night the men were to carry Roman candles to show the position of the waves. All the battalions in the Brigade carried out this form of attack, and when they had mastered the new features it was practised by the Brigade.
On the 14th the 3rd Battalion moved to Vlamertinghe in motor lorries to relieve the 9th Canadian Battalion, which had suffered heavy losses, and remained there for three days, with one company at Ypres and three companies at the west end of Zillebeke Lake. On the night of the 18th it took over from the 1st Battalion Scots Guards the front trenches in Sanctuary Wood, and found the whole ground much cut about by shell-fire. The wire, which the Germans had put up whilst in occupation of the old British front line, combined with the natural obstacles, such as fallen trees and debris, made any approach on the part of the enemy very difficult. Reconnaissance proved that the Germans had withdrawn to their original front line, leaving the old British line full of dead, equipment, and ammunition. Over 350 rifles and a large quantity of ammunition were thus collected. Both on the 19th and 20th the Battalion was subjected to heavy shelling, and even during the relief suffered casualties, among whom was Lieut, the Hon. H. E. Eaton who was wounded. After a week’s rest in Camp D, the Battalion took over the left reserve sub-sector, at the junction of the British and French armies on the Yser Canal, where it remained for three days, and on the night of the 30th it went up again into the front line.