On the 31st the Battalion marched with the Irish Guards and the 11th Field Company, R.E., under Major Jeffreys to Noeux les Mines _via_ Bethune. The Prince of Wales and Lord Claud Hamilton marched with it most of the way. Some shelling took place _en route_, and it turned out that the enemy's fire, which seemed unaccountably accurate, was being directed by an observation balloon which could be seen behind his lines. As the Battalion moved into its billets the enemy commenced to shell the town, and succeeded in destroying some houses and wounding a few civilians. On the 25th a draft of 120 men under Second Lieutenant H. A. Clive arrived, and on the 31st Second Lieutenant E. R. M. Fryer joined the Battalion. [Sidenote: June.] During June the Battalion spent alternately two days in the trenches and two days in billets. The billets were at Sailly-la-Bourse, and the trenches at first near Auchy and afterwards at Vermelles. Every precaution against gas attacks was taken, and an order was issued to the effect that a G on the bugle was to be the signal to prepare for gas. As the Battalion at that time had only two buglers owing to the casualties and the boys who had been sent home sick, the order was difficult to carry out, but men were found who, without being musicians, were at least able to produce the desired note on the bugle. The trenches at Auchy were indifferent, and required a great deal of attention, but those at Vermelles were much better. The great difficulty the men had to contend with at both places was the high crops and long grass which had grown up quite close to the line, and which not only impeded the view, but also provided cover which might be used by the enemy. During the day it was an absolute impossibility for the men to go out and cope with this difficulty, but at night parties were sent out to cut down the crops. The men after working for an hour or so at this work seemed to lose all sense of direction, and when an alarm was given they had no idea in which direction their own trenches lay. It often happened that men would wander off towards the German lines under the impression they were going home. On several occasions when the enemy became aware of any large numbers of men working out in front they would open a heavy rifle-fire on them. All the men in the working party would then at once lie down and wait until the fire subsided; but on one occasion the Germans showed no inclination to cease firing, and the party had to be withdrawn. They crawled back slowly, being guided by Captain Cavendish, who held up his luminous watch to show them the right direction. Every night there were a few casualties, and on the 7th Lieutenant R. S. Corkran who had just gone out with one of these parties was severely wounded by a rifle bullet in the thigh, and died a few days later.