X. MILITARY HISTORY OF THE GREAT WAR
commanders, von Kluck, von Bülow and von Hansen, the General Staff monographs "Lüttich-Namur" and "Mons," the official list of battles and engagements, with the names of the formations, etc., present, entitled "Schlachten und Gefechte," and the stories of participants like General von Zwehl, General von Kuhl, Hauptmann Bloem (the novelist) and Hofprediger Vogel. It was originally intended to give the accounts derived from German sources in the form of notes at the end of each Chapter; but, after consideration, it was decided that such an arrangement might prove inconvenient, and that it was better as a general rule to include them in the body of the Chapters, as close as possible to the events in the British narrative to which they refer. This arrangement, in view of the difference of the character of the material, has naturally caused breaks in the style and scope of the story, but it makes the comparison of the two accounts easier.
General Freiherr Mertz von Quirheim, the Director of the German Reichsarchiv, Berlin, which has custody of the war records, has been good enough to furnish material in order to clear up a few points on which there seemed insufficient information.
As separate histories of the Royal Air Force and the Medical Services are being compiled, a detailed account of their work has not been included in the narrative.
Two sets of maps have been prepared. The one, distinguished by the word " Sketches,"sufficient for the general reader, is bound in the volume; the other, intended for the use of students of war, is issued separately. Except the situation maps for the battle of the Aisne, which are taken from the originals, the maps have been compiled from data and sketches in the war diaries or furnished by officers, or from French and German publications.
The typescript or proof sheets have been read by a number of commanders and staff and regimental officers who took part in the events narrated, and the compiler has been greatly assisted by their advice and criticism, See List of Books, pp. xxv-xxix.
