These raids were carried out by the 6th Gordon Highlanders, the 6th Seaforth Highlanders, the 7th Gordon Highlanders, and the 7th Black Watch. Of these, the first and third failed owing to the torpedoes not bursting; the second was an unqualified success, and is described in detail later. The fourth was successful, but only two Germans were found in the trench. The following night two more raids took place. Of these, one carried out by the 5th Gordon Highlanders was completely successful, and twenty-five Germans are reported to have been killed. The second raid, carried out by the 9th Royal Scots, was also successful, but only one German was found in the trenches. He was killed. On 22nd September the 6th Gordon Highlanders made a second attempt at the raid which had been unsuccessful on 15th September. However, the enterprise again had to be abandoned, as the torpedo failed to explode and the wire remained uncut. As raiding became so marked a feature of the war, space forbids that each raid should be described in detail. General Harper was therefore asked to select the raid he considered most suitable for description, and he has chosen that carried out by the 6th Seaforth Highlanders on 15th September 1916. This raid is therefore now described in detail. The area selected for the operation was a most prominent salient formed by the German front line. Through the apex of this salient, and running at right angles to the fronts of the opposing forces, ran the Armentières-Lille Railway. Across the base of the salient ran a well-defined entrenchment. The general plan was as follows: The raiders were divided up into two parties, each consisting of one officer (Lieutenants J. Sainter and D. F. Jenkins), one sergeant, one corporal, and ten privates, with a blocking party each of one N.C.O. and three men. The scheme was that each party should cut the wire at its own point of entry by means of Bangalore torpedoes, while the wire was to be cut for a point of exit by the 2-inch mortars. The two parties were to enter the salient from opposite sides and close to its base. They were then to leave their blocking parties to cover their rear, while they both worked forwards to the apex. By meeting at this point it was hoped that the entire garrison of the salient would be accounted for. The Bangalore torpedoes, both seventy-five feet in length, were to be placed under the wire thirty minutes before zero, Lieutenants Sainter and Jenkins, each with two men, being responsible for placing the torpedoes in position. The raiding parties were ordered to leave their trenches and form up in No Man's Land about thirty yards away from their torpedoes, ready to rush through the gap in the wire as soon as the explosions took place.