As we stood on the hill-crest and talked to the French officer a furious cannonade was going on around us. In our rear, hidden behind hills, three different French batteries were in intermittent action, and somewhere off beyond the valley in front lay the hidden German batteries which were returning their fire. Shells from both sides passed back and forth over our heads and the German shells banged and burst a thousand yards behind our backs. The guns beside us were silent. They had, undetected, held their present position for a whole day. They watched the two lines in the valley as intently as these lines watched each other, for in front of us was one of those crucial points against which attacks are frequently launched by the enemy. The batteries beside which we stood waited hour after hour for that sudden critical moment when the Germans should attempt to launch any attack between the lines. These nine guns could together fire two hundred rounds a minute, which means seventy thousand shrapnel bullets. These batteries were connected by telephone with the trenches a mile in front, and also with various observation points from which the results of their fire could be accurately judged and cross-checked. A few hundred yards to our right in plain view across the open fields was the little village of Auchonvillers. Suddenly a great German shell burst with an earth-shaking shock in the open fields about three hundred yards behind it, throwing up a great cloud of inky black smoke nearly as large as a city block. It made a crater more than a hundred feet in circumference. The French officers said that it was either a twelve-inch or an "eleven-point-two" and prophesied that a second and more accurate shot would soon follow and strike the village itself. We watched intently and some minutes later a great shell did fall squarely into the little hamlet. Again a great cloud of jet black smoke shot up into the air, but this time it was mixed with bits of houses and fragments of earth. The smoke drifted off slowly, and reluctantly floated away on the wind until some minutes later we were able to discern the town as it emerged from the cloud of dust, showing a great gap in its sky-line. * * * * * We had lunch in Doullens with the officers of Mr. Norton's train. * * * * *