Just north of the famous Leipsic Salient on the map, lay, first, the Hohenzollern Trench and, secondly, the Wonder Work: two strongly fortified positions. Eastward out of Thiepval, from the point where the road from the Cemetery meets the main road in a right angle, ran the Zollern Trench, terminating (for present purposes) at the Zollern Redoubt north of Mouquet Farm. Further along the road from the Cemetery, at a point about as far north of the Crucifix as the Cemetery is south of it, the Stuff Trench started to run eastwards, parallel to the Zollern Trench below. It was very elaborately fortified, and terminated in the Stuff Redoubt still further above Mouquet Farm. The Regina Trench ran further eastward, from about the point where the Stuff Trench terminated. Parallel with the road from the Cemetery and Crucifix, the Lucky Way ran up towards Grandcourt, and the Grandcourt Trench branched off eastward a little below the village, again in a parallel line with the Regina and Zollern Trenches. West of that Cemetery road and crossing the Divion Road about half-way between the Cemetery and St. Pierre Divion was the horrible Schwaben Redoubt; and, though these names do not exhaust the German defences of Thiepval, they recall sufficiently the opposition to the 7th West Ridings and their support on this third Sunday in September. The assault was made in four waves at intervals of fifteen, twenty and fifteen feet, the unit being a Platoon. A Bomb Squad, consisting of one N.C.O. and eleven other Ranks, accompanied each half-Company, and every man of the last two waves carried either a pick or a shovel. Report Centres, main and subsidiary, Battalion Scouts, and other special parties were detailed for duty, and all Troops were reported in position at 6 p.m. Nearly everything went right, except that a portion of D Company, including both Lewis Guns and their detachments, were believed to have advanced towards the Row of Apple Trees, and were either taken prisoners or wiped out by machine-gun fire. About 7 o’clock reports were received that the objective had been captured, though it was doubtful how the left flank had fared. The total casualties in this little action were five Officers and 215 other Ranks. Certain valuable lessons were learned: the action proved that the jumping-off trench should be parallel to the objective (this precaution enabled direction to be kept accurately); that every man, and not merely the last comers, should carry a pick or shovel, fastened to his body by rope or tape; and that the consolidating parties should either be kept back till the barrage stops or require dug-outs: trivial details, perhaps, but they saved life and added to efficiency. We may add that the Army Commander, Sir Hubert Gough, visited the Battalion on September 19th, and expressed his satisfaction with the operation, which gained an important part of the enemy defences after five previous