This new method of fighting has developed out of the necessity for defeating a heavily entrenched enemy. It is a method which the Allies at last are able to adopt because of the almost limitless resources in man-power which America has placed at their disposal. For the Western Front to be rightly understood, must be regarded as a banjo-string, composed of living men holding hands from Switzerland to the English Channel. Under pressure the string may give and give, but it must never break. The moment it breaks, the thing happens which takes place when a banjo-string snaps—it curls up towards the ends and leaves a gap. The only power that can save the day when the banjo-string has snapped, is the masterly strategic employment of the reserves. The reserves may stop the rush by selling their lives to a man, or they may do it by luring the attacker on until he has advanced beyond his strength. But if the side attacked has guessed wrongly as to the point to be attacked, so that its reserves are at a distance when the disaster happens, a calamitous retreat on either flank will have to be begun or the jig is up. To compel this retreat is the purpose of Foch’s present thrust. In adopting these hide-and-seek tactics of night-marches we are borrowing a lesson from the Hun. He has already tried to do precisely what we now intend to accomplish. In his great drive of the spring, when he all but took Rheims and Amiens, he massed his storm-troops seventy miles behind his objective. Day by day he kept them hidden from spy and aeroplane observation, moving them only by night. His railroad and transportation arrangements were so perfect that, commencing at dusk, he was able to fling the whole weight of his fighting-wedge up front and have it hammering at our doors by daylight. As we rode beneath the August night, my Major summed up the situation: “We’re trying to bluff the Hun into expecting us up north, while we make for the south as fast as we can hurry. I’ll tell you what it is, Chris; we can afford to die, now that the Americans are behind us with their millions. Believe me, before this month is ended, there’s going to be some tall dying.” That phrase, “We can afford to die,” arrested my attention. It was so brutally financial, as though human lives were only so much national capital, and not the focus-points of loyalties and affections. It was as though the casualties for the military year could be apportioned ahead of time, so that the national books of birth and death might be made to balance. It was making a mathematical calculation as to men’s uncalculated and individual sacrifice; no more must be killed in any given twelve months than the bodies of the living could re-supply. And yet———