There was a disused support trench running west from the Quarry, and this suited my purpose admirably. It ran just along the crest of the hill, and commanded even a better view of Fricourt than the Quarry itself. Moreover, there was enough earth thrown up in front of the trench to enable us to fix in the steel-plate (at an angle of 45°: this increases its impenetrability) on ground level, without the top protruding above the top of the earth. The soil in front was not touched at all until the plate was fixed in, and then enough was carefully scooped away from the front of the actual loophole to secure a fair field of view. The earth in front of the loophole is then exactly like a castle wall, with a splay window. If you think of a Norman castle you will know exactly what I mean. The loophole represents the inch-wide aperture in the inner side of the splay. Similarly an embrasure is built behind the loophole, with room for one man to stand and fire, and the second man to sit by him. A rainproof shelter of corrugated iron is placed over this embrasure, and covered over with earth; this prevents it being spotted by aeroplane; also it makes the place habitable in the rain. Here is a section of a typical sniper’s post: [Illustration] “Click, click click” went the pick into the chalk, cutting room for the embrasure; there was a tinny sound as some of the loose surface soil came away with a spurt, spilling on to the two sheets of corrugated iron waiting to go on to the roof. Added to this were the few quiet whispers, such as “Where’s that sand-bag?” or “Is this low enough, sir?”, and the heavy breathing of Private Evans as he returned from the Quarry after emptying his sand-bag. For all the chalk cut away had to be carried to the Quarry and emptied there; new earth on the top there would not give any clue to those gentlemen in Fricourt Wood who put the smell of powder in my nostrils a few hours back. It was a darkish night, but not so dark but what you could see the top of the trench. There are very few nights when the sky does not show lighter than the trench-sides. There are a few, though, especially when it is raining; and they are bad, very bad. But that night I could just distinguish the outline of the big crater-top, half-right, and follow the near skyline along the German parapet down into Fricourt valley. I was gazing down into that silent blackness, when a machine-gun started popping; I could see the flashes very clearly from my position. Somewhere in Fricourt they must be. Meanwhile the post was nearly finished; the corrugated iron was being fixed to the wooden upright, and Jones was on the parapet sprinkling earth over it. The others were deepening the trench from the Quarry to the post. “That’s the machine-gun that goes every night, sir,” said Jones. “Enfilading, that’s what it is.” “Pop--pop--pop,” answered the machine-gun. “Look here, Jones,” said I. “You know No. 5 post, opposite Aeroplane Trench?” “Yes, sir!”