Classes in grenade-fighting were under the supervision of officers of the Royal Engineers. In the early days of the war there was but one grenade in use, and that a crude affair made by the soldiers themselves. An empty jam tin was filled with explosive and scrap iron, and tightly bound with wire. A fuse was attached and the bomb was ready for use. But England early anticipated the importance which grenade-fighting was to play in trench warfare. Her experts in explosives were set to work, and by the time we were ready for active service, ten or a dozen varieties of bombs were in use, all of them made in the munition factories in England. The "hairbrush," the "lemon bomb," the "cricket ball," and the "policeman's truncheon" were the most important of these, all of them so-called because of their resemblance to the articles for which they were named. The first three were exploded by a time-fuse set for from three to five seconds. The fourth was a percussion bomb, which had long cloth streamers fastened to the handle to insure greater accuracy in throwing. The men became remarkably accurate at a distance of thirty to forty yards. Old cricketers were especially good, for the bomb must be thrown overhand, with a full-arm movement. Instruction in bayonet-fighting was made as realistic as possible. Upon a given signal, we rushed forward, jumping in and out of successive lines of trenches, where dummy figures--clad in the uniforms of German foot soldiers, to give zest to the game--took our blades both front and rear with conciliatory indifference. In the afternoon Tommy's time was his own. He could sleep, or wander along the country roads,--within a prescribed area,--or, which was more often the case, indulge in those games of chance which were as the breath of life to him. Pay-day was the event of the week in billets because it gave him the wherewithal to satisfy the promptings of his sporting blood. Our fortnightly allowance of from five to ten francs was not a princely sum; but in pennies and halfpennies, it was quite enough to provide many hours of absorbing amusement. Tommy gambled because he could not help it. When he had no money he wagered his allowance of cigarettes or his share of the daily jam ration. I believe that the appeal which war made to him was largely one to his sporting instincts. Life and Death were playing stakes for his soul with the betting odds about even. The most interesting feature of our life in billets was the contact which it gave us with the civilian population who remained in the war zone, either because they had no place else to go, or because of that indomitable, unconquerable spirit which is characteristic of the French. There are few British soldiers along the western front who do not have memories of the heroic mothers who clung to their ruined homes as long as there was a wall standing. It was one of these who summed up for me, in five words, all the heart-breaking tragedy of war.