“That’s clear enough,” said the Colonel. “Then from _here_ to _here_ (and he made pencil blobs where I have marked A and B on Map III) we will clear the trench. Get your Lewis guns placed at these two points (A and B), ready to open fire as soon as the mine has gone up. And get your bombers ready to seize the crater edge as soon as it’s dark enough. You’ll want to have some tools and sand-bags ready, and your wirers should have plenty of gooseberries and all the stakes we can get you. Right.” * * * * * As I went up 76 Street at half-past five, I realised that I had been rushing about too much, and had forgotten tea. So I sent Davies back and told him to bring up a mug of tea and something to eat. No sooner had he disappeared than I met a party of six R.E.’s, the two leading men carrying canaries in cages. They held them out in front, like you hold out a lantern on a muddy road, and they were covered from head to foot in white chalk-dust. They were doing a sort of half-run down the trench, known among the men as the “R.E. step.” It is always adopted by them if there is any “strafing” going on, or on such occasions as the present, when the charge has been laid, the match lit, and the mine-shaft and galleries, canaries and all, evacuated. (The canaries are used to detect gas fumes, not as pets.) When I reached the Fort, I found No. 7 Platoon already filing out of the trench area that had been condemned as dangerous. “You’re very early, Sergeant Hayman,” I said. I looked at my watch. “Oh, all right,” I added, “it’s twenty to six; very well. Have you got all the bomb boxes and S.A.A. out?” “Yes, sir. Everything’s clear.” “Very well, then. All those men not detailed as tool and sand-bag party can get in dug-outs, ready to come back as soon as I give orders. There will probably be a bit of ‘strafing.’” “Very good, sir.” The Lewis-gun team emerged from its dug-out twenty yards behind the Fort, in rather a snail-like fashion. I arranged where the N.C.O. and two men should stand, just at the corner of the Fort, but in the main trench (at B in map). The rest of the team I sent back to its burrow. Edwards had made all arrangements for the other team. Ten to six. It was a warm evening early in April, and there was a deathly calm. These hushes are hateful and unnatural, especially at “stand to” in the evening. In the afternoon an after-dinner slumber is right and proper, but as dusk creeps down it is well known that everyone is alive and alert, and a certain visible expression is natural and welcome. This evening silence is like the pause between the lightning and the thunder; worst of all is the stillness after the enemy has blown a mine at “stand to,” for ten to one he is going to blow another at “stand down.” The sun set in a blaze of red, and in the south the evening star glowed in a deepening blue. What will have happened by the time the day has returned with its full light and sense of security?