Those are the cramped and contorted parts of the front. A few miles away it will straighten and loose itself out; you see it run free, in great, easy curves, up the slopes of wide moorlands, the two front lines drawn apart almost three hundred yards. Each is a double band of colour; the white ribbon of its dug chalk and the broader rust-brown ribbon of its tangled wire stand out clear against the shabby velveteen grey of the heath. Here there is less of thrill and more of ease in trench life; by day the sentries peer, hour by hour, into the baffling mist that is woven across their sight by our own and the enemy’s wire; it is like trying to see through low and leafless, but thick, undergrowth. By night the wire makes, to the sentry’s eye, a middle stratum of opaque dark grey, between the full blackness of the earth below it and the more penetrable obscurity of the night air above. But the darkness is never trusted for long. All night each army is sending up rocket-like lights to burst and hang like arc lamps in the air over the firing trench of the other. From a commanding point you can see, at any moment of any night, scores of these ascending rockets, each like a line drawn on the dark with a pencil of flame, arching over to intersect each other near the zenith of their flight, incessantly tracing and re-tracing the lines of a Gothic nave over all No Man’s Land, from the Alps to the sea. All night, too, there is a kind of pulse of light in the sky, along the whole front, from the flash of guns. From the trenches the flash itself can seldom be seen, but the sky winks and winks from moment to moment with the spread and contraction of a trembling radiance like summer lightning. At most parts of the line a man in the front trench is cut off from landscape. To look at a tree behind the enemy’s lines may be to give a mark to a sniper hidden in its boughs. By day you see the upper half of the dome of the sky, and, through loopholes, a few yards of rough earth or chalk, then the nebulous wire and, through its thin places, perhaps a few uniforms, blue, grey or brown, lying beyond, among the coarse grass and weeds. At night you see all the stars well, and on moonlight nights, if you walk the trench softly, you can watch strange friezes sharply silhouetted on the sky line of the parapet, the wars and loves of capering rats, “flouting the ivory moon.” Whole choirs of larks may be heard: neither cannon nor small arms seem to alarm them; and most of the ground has its own hawk to quarter it daily.