On the 30th April the enemy delivered another attack, using gas. This fell mainly on the Irish Regiment, but the 6th Battalion in reserve occupied battle positions, and collected many men who were driven back by the gas. At night the Battalion marched back to huts in Brielen Wood, where it rested for 24 hours. Leaving there, it marched to St. Jansterbiezen, where it was inspected on the morning of the 2nd May by Sir John French, who thanked the men for their good work and praised especially A and B Companies. On the 8th May a draft of officers joined the Battalion, and the following day a move was made back to Brielen Woods. Here the Battalion, living in bivouacs, was in Divisional reserve for one day. The transport and Q.M. Stores moved into a field near Poperinghe. After this short rest the Battalion learnt that it was to return to the scene of its first experiences. On the 10th May it marched to Potijze and occupied the G.H.Q. line near the railway and some dug-outs in the cutting south-east of Ypres. Here the men were shelled at intervals, particularly on the 13th, and spent the nights on working parties. It was whilst in this area that the new gas respirators, consisting of a pad of cotton wool and a strip of muslin, were issued on a scale of one to every twelve men. On the 19th May Major W.E. Taylor, York and Lancaster Regiment, arrived and took over command from Capt. Jeffreys. Two days later the Battalion was relieved by the East Surrey Regiment, and returned to Brielen huts. During the next few days the artillery fire increased considerably on both sides, and just before dawn on Whit Monday, the 24th May, the Germans launched their gas attack. The gas cloud drifted towards Brielen and the men were roused and moved about half a mile from the camp to which they returned for breakfast and to prepare to move into action. The morning had turned out bright and fine when they paraded and marched off to Potijze. In those days the road leading out of Ypres eastwards was still marked by leafy trees, and as the Battalion marched along it, trees, branches and leaves were lying about, brought down by the heavy fire. Arriving at the wood, which was being heavily shelled, the men were put into ditches and half-dug trenches. Later in the day packs were collected, and in the lighter "Fighting Order" the men manned the G.H.Q. line in front of the wood, being in reserve to the 3rd Battalion Middlesex Regiment, who were under orders to deliver a counter-attack. Whilst taking up this position Major Taylor was wounded and 2nd Lieut. J.M. Hare killed, and Capt. Jeffreys again assumed command. The counter-attack was cancelled and the Battalion moved back to dug-outs on the Menin Road, where it stayed all the next day.