On the day of the relief various advance parties go up, keeping under the lee of hedges and embankments, and marching in single file. (At least, that is what they are supposed to do. If not ruthlessly shepherded, they will advance in fours along the skyline.) Having arrived, they take over such positions as can be relieved by daylight in comparative safety. They also take over trench-stores, and exchange trench-gossip. The latter is a fearsome and uncanny thing. It usually begins life at the "refilling point," where the A.S.C. motor-lorries dump down next day's rations, and the regimental transport picks them up. An A.S.C. Sergeant mentions casually to a regimental Quartermaster that he has heard it said at the Supply Dépôt that heavy firing has been going on in the Channel. The Quartermaster, on returning to the Transport Lines, observes to his Quartermaster-Sergeant that the German Fleet has come out at last. The Quartermaster-Sergeant, when he meets the ration parties behind the lines that night, announces to a platoon Sergeant that we have won a great naval victory. The platoon Sergeant, who is suffering from trench feet and is a constant reader of a certain pessimistic halfpenny journal, replies gloomily: "We'll have had heavy losses oorselves, too, I doot!" This observation is overheard by various members of the ration party. By midnight several hundred yards of the firing-line know for a fact that there has been a naval disaster of the first magnitude off the coast of a place which every one calls Gally Polly, and that the whole of our Division are to be transferred forthwith to the Near East to stem the tide of calamity. Still, we must have _something_ to chat about. * * * * * Meanwhile Brigade Majors and Adjutants, holding a stumpy pencil in one hand and a burning brow in the other, are composing Operation Orders which shall effect the relief, without-- (1) Leaving some detail--the bombers, or the snipers, or the sock-driers, or the pea-soup experts--unrelieved altogether. (2) Causing relievers and relieved to meet violently together in some constricted fairway. (3) Trespassing into some other Brigade Area. (This is far more foolhardy than to wander into the German lines.) (4) Getting shelled. Pitfall Number One is avoided by keeping a permanent and handy list of "all the people who do funny things on their own" (as the vulgar throng call the "specialists"), and checking it carefully before issuing Orders. Number Two is dealt with by issuing a strict time-table, which might possibly be adhered to by a well-drilled flock of archangels, in broad daylight, upon good roads, and under peace conditions. Number Three is provided for by copious and complicated map references. Number Four is left to Providence--and is usually the best-conducted feature of the excursion.