On May 26th "B" Company, who had remained in the subsidiary line, were relieved by "D" Company. Early the next morning sounds were heard suggestive of a gas attack. The great bell at Houplines Level Crossing was tolling. Runners flew off to rouse the companies. Officers appeared at doorways, clothed in pyjamas, gum-boots, and box-respirators; while Lieutenant James, the Gas Officer, sniffed the early morning air like a war-horse scenting battle. Each person in turn thought he smelt chlorine—or was it phosgene? In every case it turned out to be the smell of a stale cigar, the proximity of the refuse-bin, or something else equally harmless. Gas there was none, and at length, after conversation with the Brigade, it was discovered that a few gas shells had fallen near the sentry at the level-crossing, and thus produced an alarm. So back we all went, cursing, to bed, everyone feeling a bit resentful that after we had been thus disturbed no gas had come after all.

On May 29th the gas stored in Houplines was at length released. The only part that we took in the proceedings was the posting of six stretcher-bearers at the top of Irish Avenue, an unpleasant spot, though fortunately they sustained no casualties.

During these days in billets the presence of the Battalion Orchestra made itself felt, with excellent results. The instruments had been brought over for us by the Division. It was a considerable item for regimental baggage, consisting as it did of ten instruments. Sergeant Lawton, battalion sanitary N.C.O., was in charge of the orchestra, and played the trombone when his duties permitted. Rifleman Garrod, the first violin, was a player of exceptional merit from the Liverpool Philharmonic Orchestra. As a soloist he was particularly fine. The remaining members of the party, all well above the average, were—violins, Lewin, Hardacre, and Lance-Corporal Hume; viola, Edmondson; 'cellos, Kaye and Kennedy; bass, Lance-Corporal Buckley; trombone, Williams; drums, Burden; and librarian (self-styled and self-appointed), Rifleman King. Lance-Corporal Bell, from the Quartermaster's Stores, occasionally performed on the oboe. Rifleman Collins, an excellent violinist, had been left behind, unfortunately, in England suffering from influenza.

By arrangement with the other units of the Brigade, our contribution to the recently formed Brigade Pioneer Company was reduced by the strength of the orchestra. In return for this, the latter was always loaned to another battalion while we were in the line, and also for special occasions when we were out. In addition, it used to play for our own mess on guest nights, and very delightful it was; and also occasionally for the Divisional Concert Party's performances, and for the Brigade and Divisional Commanders. It was in great demand everywhere, and there can be no doubt that the results more than justified the employment of the personnel thus utilized. Another invaluable asset was Rifleman Kessen, a very prince of conjurers. He seemed to have an infinity of excellent tricks, and he fooled you under your very nose in the most baffling fashion.

On May 31st the battalion once more relieved the 2/7th K.L.R. The arrangement of companies—"A," "B," "D," "C" from the right—was due to the forthcoming raid, to be carried out by parties from "A" and "B" Companies on Centaur Trench, opposite the Pont Ballot salient. This necessitated "A" and "B" Companies being as near the proposed area as possible. Colonel Fletcher arrived in the line from leave at midnight, and with characteristic energy proceeded at once on a tour of inspection.

This spell in the line was one of exceptional activity. To begin with, there was the impending raid, which, being our first, occupied nine-tenths of our thoughts. There were innumerable special patrols to examine the wire and the approaches to the points of entry; the artillery wire-cutting operations had to be settled; the incessant visits to observation posts and the selection of forming-up places, raid headquarters, regimental aid posts, etc., to be arranged for. In addition to all this, the Battle of Messines took place during the tour. Immediately after that came orders for following up the enemy, if he voluntarily evacuated his trenches; and before we were half through that came schemes for the defence of Armentières in the event of an attack by the Germans. But we must take things in order.

The morning after relief (June 1st, 1917) the enemy dropped a "pineapple" into a Lewis-gun post of "C" Company, killing three men and wounding two. His activity in this direction was now so great that steps had to be taken to cope with it. Two light trench mortars were permanently established in the front line, and for every "pineapple" we returned a number of Stokes shells. The teams did not have a pleasant time of it, as the Germans made every endeavour to knock them out; but they stuck to it gallantly, and by the end of the time their efforts had become singularly effective, although the enemy later retaliated by producing a medium "minnie."

A slight scare was caused by the alleged appearance of a German near "C" Company's cook-house, at the left extremity of the subsidiary line, and patrols spent several nights down by the river trying to catch the supposed intruder. Whether there was anything in the rumour or not was never satisfactorily settled, but it would have been perfectly simple for him to get there. Between our left and the river there was a gap of a couple of hundred yards, which after weeks of fine weather had become dry and hard, and, as subsequent investigations after the Armistice proved, there was ample cover for a whole battalion to come up unseen. Moreover, the German raids on the left sector must have revealed to them the absence of any serious opposition in that part of the line. In fact, the liability of the battalion to be outflanked on the left was the subject of a strong memorandum from Colonel Fletcher, but nothing was done except that some wire was erected later, and a Lewis gun post located in the cellar of a ruined house close to the river and in line with our support line. The presence of fresh earth on a footbridge crossing a branch of the Lys, which was discovered by the patrol, certainly gave some colour to the story of "C" Company's cook.

June 4th, 5th, and 6th produced barrages on the Messines Ridge; they took place each afternoon, and lasted for about an hour. It was understood that barely half of the guns to be employed on the day were in action, but it was a wonderfully awe-inspiring sight to watch the effect of the mass of shells crashing down on the slopes of the ridge. The heavies in Armentières and our own 18-pounders took part in these preliminary barrages, with the result that the shelling of Armentières by the enemy became intense, and particularly in the vicinity of battery positions, which constant firing had now revealed to the enemy, and produced the most severe counter-battery work on his part. Our trenches, too, received marked attention. The enemy seems always to have been suspicious of an attack on Frelinghien, and he set to work on the left and left-centre company sectors with great determination. Shells of a calibre not usually employed in ordinary trench warfare began to plough up our communication trenches, Irish Avenue especially. Cambridge House was frequently shelled intensely, and, in fact, there was no part of our sector that did not receive considerable attention daily. The wire-cutting on the right provoked the enemy terribly, and each time it was carried out severe retaliation took place. Houplines road was now shelled regularly with great bursts of 5·9's and heavy shrapnel. One 4·2 battery kept up such an incessant fire into the vicinity of Tissage Dump that we used to call it the "rising tide," the noise of the stream of shells as they passed over sounding not unlike the steady onrush of the sea.

Quesnoy, nearly opposite to us, we used to bombard heavily, and some part of it was usually on fire. Frelinghien was frequently almost hidden in red dust, while Wytschaete Ridge for long periods at a stretch looked as if it were enveloped in a sandstorm. Every night north of the Lys one or both sides were raiding, and the rumble of barrages, the red bursts of shrapnel, and the stream of coloured rockets continued well on into the daylight.