We flattened ourselves casually against our mudbank, carefully adjusting our glasses, turned them toward the valley before us, whence came the sound of exploding shells, and calmly watched a village developing into nothingness in the sunset. It was only about a thousand yards away--I didn't even bother to ask whether it was in French or German possession. There was a loud explosion, a roll of dense smoke, which was penetrated quickly enough by the long, horizontal rays of the descending sun to permit the sight of tumbling roofs and crumbling walls. After a few seconds' intermission there was another explosion, and what looked like a public school in the main street sagged suddenly in the centre. With no entre-acte came a succession of explosions, and the building was prone upon the ground--just a jagged pile of broken stones. We turned our glasses on the other end of the village. A column of black smoke was rising where the church had caught fire. We watched it awhile in silence. Ruins were getting very common. I swept the glasses away from the hamlet altogether and pointed out over the distant fields to the left. "Where are the German trenches?" I rather uninterestedly asked the Major. "I'll show you--just a moment!" he answered, and at the same time signaling to a soldier squatting in the entrance to a trench near by, he ordered the man to convey a message to the telephone station which connected with a "seventy-five" battery at our rear. I was on the point of telling the officer not to bother about it. The words were on my lips. Then I thought "Oh, never mind! I might as well know where the trenches are, now that I have asked." The soldier disappeared. "Watch!" said the officer. We looked intently across the field to the left. In less than a minute there were two sharp explosions behind us, two puffs of smoke out on the horizon before us, about a mile away. "That's where they are!" the officer said. "Both shells went right in them." "Ah! Very interesting!" I replied. Away to the right of the village, now reduced to ruins, was another larger village; we squared around on our mud bank to look at that. This town was more important; it was Neuville-St. Vaast, which is still occupied by both French and Germans, the former slowly retaking it, house by house. We were about half a mile away. We could see little; for, strangely, in this business of house-to-house occupation, most of the fighting is in the cellars. But I could well imagine what was going on, for I had already walked through the ruins of Vermelles, another town now entirely in French possession, but taken in the same fashion after two months' dogged inch-by-inch advances.