At one point in the enemy's trenches opposite to us his barbed-wire defences had worn very thin, and steps were taken by means of systematic machine-gun fire to prevent him repairing them. This spot was selected for the raid. A party of twenty-five was detailed. It was to be led by Angus M'Lachlan, and was to slip over the parapet on a given moonless night, crawl across No Man's Land to within striking distance of the German trench, and wait. At a given moment the signal for attack would be given, and the wire demolished by a means which need not be specified here. Thereupon the raiding party were to dash forward and--to quote the Sergeant-Major--"mix themselves up in it." Two elements are indispensable in a successful trench-raid--surprise and despatch. That is to say, you must deliver your raid when and where it is least expected, and then get home to bed before your victims have had time to set the machinery of retaliation in motion. Steps were therefore taken, firstly, to divert the enemy's attention as far as possible from the true objective of the raid, by a sudden and furious bombardment of a sector of trenches three hundred yards away; and secondly, to ensure as far as possible, that the raid, having commenced at 2 A.M., should conclude at 2.12, sharp. In order to cover the retirement of the excursionists, Ayling was ordered to arrange for machine-gun fire, which should sweep the enemy's parapet for some hundreds of yards upon either flank, and so encourage the enemy to keep his head down and mind his own business. The raid itself was a brilliant success. Dug-outs were bombed, emplacements destroyed, and a respectable bag of captives brought over. But the element of surprise, upon which so much insistence was laid above, was visited upon both attackers and attacked. To the former the contribution came from that well-meaning but somewhat addlepated warrior, Private Nigg, who formed one of the raiding party. Nigg's allotted task upon this occasion was to "comb out" certain German dug-outs. (It may be mentioned that each man had a specific duty to perform, and a specific portion of the trench opposite to perform it in; for the raid had been rehearsed several times in a dummy trench behind the lines constructed exactly to scale from an aeroplane photograph.) For this purpose he was provided with bombs. Shortly before two o'clock in the morning the party, headed by Angus M'Lachlan, crawled over the parapet during a brief lull in the activities of the Verey lights, and crept steadily, on hands and knees, across No Man's Land. Fifty yards from the enemy's wire was a collection of shell-holes, relics of a burst of misdirected energy on the part of a six-inch battery. Here the raiders disposed themselves, and waited for the signal.