However, the Highland Division, with a number of stalkers and gillies in its ranks, had probably the best material the country produced from which to make snipers. After a short period devoted to organisation and training, the snipers of the Division soon obtained a superiority over the enemy. It, however, always remained a sector in which the greatest care had to be exercised in looking over the parapet or in moving amongst the saps and forward boyaux. Enemy snipers were continually shattering periscopes with rifle shots. In the Labyrinth the Division made its first organised raids. These raids consisted in heavily barraging a certain area, then at a given moment the barrage lifted off certain portions of this area and allowed the assaulting infantry to enter it. The barrage remained down on three sides of the area to protect the attackers who entered it from the fourth side from interference from without while they were destroying the Germans within. This form of barrage, originally first employed by the Germans, was known as the Box Barrage. The two most successful raids which took place during this period were those carried out by Lieutenant E. A. Mackintosh of the 5th Seaforth Highlanders (since killed in action), and Captain Herd of the 6th Black Watch. The former was in consequence awarded the Military Cross, and the latter the D.S.O. Raids subsequently became of such frequent occurrence that want of space forbids description of them all. Certain raids have, however, been selected for description, which will be dealt with later. These raids in particular brought to light certain facts concerning German trench construction. The German trenches did not resemble the small ditch-like trenches commonly seen at schools of instruction and training grounds. They can better be compared to the marker's gallery in a rifle range. They were ten to eleven feet deep, with the sides for the most part revetted with planks. To get into them was not easy; to get out of them still less easy; while evacuating the wounded from them was a matter of very considerable difficulty. In fact, in the case of Mackintosh's raid, it is doubtful if his wounded could have been brought back to our lines at all had not a sally-port through which the more severely wounded were carried been discovered.