The day after relief (April 27th) was spent quietly enough. We had not yet got used to the presence of so many gas cylinders in the front line, and were not anxious to provoke unnecessary retaliation. The Germans were also very quiet. Some shrapnel, a few "whizz-bangs," six "pineapples," and two medium "minnies" made up his total expenditure for the hours of daylight. Sniping from the Chicken Run on to "A" Company's front line was, however, fairly persistent, but no casualties occurred that day. "A" Company of the 2/7th K.L.R. moved into the subsidiary line that evening as a more permanent garrison, and occupied the line between Battalion Headquarters and Cambridge House. At midnight a gas attack from the whole front of our Brigade and that of the Brigade north of the Lys had been planned, but was cancelled at the last minute, as the wind proved unfavourable. However, the right battalion was not warned in time, and released their cylinders. We much regretted that ours could not be released too, as the clearing of the line had been arranged, and already several cylinders were leaking badly. But on the night of March 29th, after many "alarums and excursions," our two flank companies and the Brigade north of the Lys let off their gas, while projectors were flung into Frelinghien at the same time. It was a very bright night, and the whitish cloud could be seen rolling across No Man's Land. The wind was rather light, and the Germans must therefore have obtained sufficient warning. A number of coloured lights shot up into the air, bells rang, and rapid rifle and machine-gun fire commenced, which caused the inquisitive to expose as little of their heads above the parapet as was feasible. "Whizz-bangs" and "minnies" began to rain on the front line, where the special R.Es. working the cylinders and the garrison of infantry had a somewhat uneasy time. Our orders were to send an officers' patrol to inspect the damage in the enemy's front line. Fortunately, however, this futile and dangerous performance was countermanded, as No Man's Land was itself full of the gas, which the wind hardly carried beyond our trenches, and three of the R.Es. and four of our men were gassed, and a corporal was killed. Otherwise no one was hit during the retaliation. In due course the R.Es. withdrew in motor lorries and the rest of the men returned to the front line, where the sickly smell of gas was strongly in evidence.