Two observers, other than C.'s passenger, had been killed during our patrol. One of them was "Uncle," a captain in the Northumberland Fusiliers. A bullet entered the large artery of his thigh. He bled profusely and lost consciousness in the middle of a fight with two Huns. When he came to, a few minutes later, he grabbed his gun and opened fire on an enemy. After about forty shots the chatter of the gun ceased, and through the speaking-tube a faint voice told the pilot to look round. The pilot did so, and saw a Maltese-cross biplane falling in flames. But Uncle had faded into unconsciousness again, and he never came back. It is more than possible that if he had put a tourniquet round his thigh, instead of continuing the fight, he might have lived. A great death, you say? One of many such. Only the day before I had helped to lift the limp body of Paddy from the floor of an observer's cockpit. He had been shot over the heart. He fainted, recovered his senses for ten minutes, and kept two Huns at bay until he died, by which time the trenches were reached. Imagine yourself under fire in an aeroplane at 10,000 feet. Imagine that only a second ago you were in the country of shadows. Imagine yourself feeling giddy and deadly sick from loss of blood. Imagine what is left of your consciousness to be stabbed insistently by a throbbing pain. Now imagine how you would force yourself in this condition to grasp a machine-gun in your numbed hand, pull back the cocking-handle, take careful aim at a fast machine, allowing for deflection, and fire until you sink into death. Some day I hope to be allowed to visit Valhalla for half an hour, that I may congratulate Paddy and Uncle. We refreshed ourselves with cold baths and hot breakfast. In the mess the fights were reconstructed. Sudden silences were frequent--an unspoken tribute to C. and the other casualties. But at lunch-time we were cheered by the news that the first and second objectives had been reached, that Martinpuich, Courcelette, and Flers had fallen, and that the Tanks had behaved well. After lunch I rested awhile before the long reconnaissance, due to start at three. Six machines were detailed for this job; though a faulty engine kept one of them on the ground. The observers marked the course on their maps, and wrote out lists of railway stations. At 3.30 we set off towards Arras. Archie hit out as soon as we crossed to his side of the front. He was especially dangerous that afternoon, as if determined to avenge the German defeat of the morning. Each bus in turn was encircled by black bursts, and each bus in turn lost height, swerved, or changed its course to defeat the gunner's aim. A piece of H.E. hit our tail-plane, and stayed there until I cut it out for a souvenir when we had returned.