In one of the bare rooms of that Ecole Militaire, at Montreuil, where the British General Staff has worked since 1916, I saw on a snowy day at the end of January a chart covering an entire wall, which held me riveted. It was the war at a glance--so far as the British Army is concerned--from January, 1916, to the end. The rising or falling of our bayonet strength, the length of line held, casualties, prisoners--everything was there--and when finally the Hindenburg line is broken, after the great nine days of late September and early October, the prisoners' line leaps suddenly to such a height that a new piece has to be added perpendicularly to the chart, and the wall can hardly take it in. What does that leaping line mean? _Simply the collapse of the German morale_--the final and utter defeat of the German Army as a fighting force. I hope with all my heart that the General Staff will allow that chart to be published before the fickle popular memory has forgotten too much of the war.[3] [3] By the kindness of General Sir Herbert Lawrence, Chief of the General Staff, I am able to give a small reproduction of this chart, which will be found at the end of the book, with an explanation written by Captain W.O. Barton. Let me then say, in recapitulation, and as presenting the main thesis of these papers, that to the British mind, at any rate, so inarticulate often, yet so tenacious, the Western campaign of last year presents itself as having been fought by three national Armies: (1) The veteran and glorious French Army, which, while providing in Marshal Foch the master-spirit of the last unified effort, was yet, after its huge sacrifices at Verdun, in Champagne, and many another stricken field, inevitably husbanding its resources in men, and yielding to the Armies of its Allies the hottest work in the final struggle; (2) The British Army, which, after its victorious reaction from its March defensive, was at the very height of its four years' development in men, training, and _morale_, and had already shown by the stand of the Third Army at Arras, at the very fiercest moment of the German onslaught, that although Germany might still attack, it was now certain that, so long as the British Army was in the field, she could not win the war: and finally;