The orders for the batteries to advance still held good, and immediately the barrage ceased they pulled out. By 6 P.M. the colonel had ridden forward again. My instructions were to remain until the divisional signalling officer had laid a line to the new Brigade Headquarters. At eight o'clock, followed by "Ernest" and the Brigade signallers who had stayed with me, I rode through St Emilie and dipped into a cul-de-sac valley crowded with the field batteries of another Division. Our way took us toward and across gorse-clad, wild-looking uplands. Night approached. Just as we halted at a spot where two puddly, churned-up sunken roads crossed, guns behind and on either side of us belched forth flame and rasping sound. Eighteen-pounder shells screamed swiftly over us; the whole countryside spurted flashes. One of the horses plunged with nervousness. "It's an S.O.S. call, sir," said a driver who had put his horse under a bank, raising his voice against the din. "Ernest," his little body quivering with excitement, was already racing backwards and forwards. I told my groom to take my horse into the sunken road, and started to look for the colonel and the headquarters party. A sticky walk up the track to the left took me within a couple of hundred yards of the village of Ronssoy, where most of the Boche shells were falling. No signs of Headquarters up there. After a lot of shouting to persuade the dog to keep near me, I turned back and went through the mud again, past the cross-roads junction, and along a still slimier, water-logged cart-track. I found every one on Headquarters digging shelters in the side of the road. The servants had rigged up a corrugated-iron habitation for the colonel. The brigade clerks, the signallers, and the cooks had dug hard, and made use of trench-covers, with the swift resource that long experience of trench-life had developed into a kind of second nature. Hubbard had arranged an "elephant," raised on two rows of ancient sandbags, for himself and me to snuggle under. "I've sent out S.O.S. lines to the batteries," said the colonel, who was sitting on a box in a long-disused gun-pit. "We'll turn this place into a mess to-morrow." The firing died down. I sent some one to tell the groom to take the horses back to the waggon line which was being established at the headquarters position we had just left. The cook prepared us a simple meal. By 10 P.M. the brigade-major had telephoned instructions for the night-firing with which the batteries were to busy themselves. Our night was disturbed by the swish-plop of gas shells, but none came near enough seriously to disquiet us. XV. "ERNEST" IS LOST