While undergoing instructions in the Admiral Stab in the Koenigergratzerstrasse 70, previous to my being sent on an English mission, a controversy arose between my instructor and myself as to the distance between two towns on the Lincolnshire coast. He pushed a button and requested the answering orderly to bring map 64 and the officer in charge. With the usual promptness both map and officer appeared. The officer, who could not have been more than twenty-five years of age, discussed with me in fluent colloquial English the whole of this section of Lincolnshire. Not a hummock, road, road-house, even to farmers' residences and blacksmith's shop of which he did not have exact knowledge. I expressed astonishment at this most unusual acquaintance with the locality, and suggested that he must have spent considerable time in residence there. Conceive my astonishment when informed that he had never been out of Germany and the only voyage ever taken by him led him as far as Helgoland. Subsequently through careful inquiries and research--my work bringing me into constant contact with the various divisions--I found that the whole of England, France and Russia was carefully cut into sections, each of those sections being in charge of two officers and a secretary whose duty it was to acquaint and make themselves perfectly familiar with everything in that particular locality. Through the far-reaching system of espionage, the latest and most up-to-date information is always forthcoming, and time and again I myself, often returning from a mission like one of those to the naval base in Scotland, have sat by the hour verbally amplifying my previous reports. A part of the intelligence system is the personality squad, whose duty it is to acquaint themselves with the personality of every army and navy officer of the leading powers. I have seen reports as to the environments, habits, hobbies, and general proclivities of men such as Admiral Fisher, commanding the Channel Squadron of the British Navy, down to Colonel Ribault, in charge of a battery in Toulouse. To military or naval officers and men of affairs, the reason and benefit of such a system are obvious. The general reader, however, may not quite see the point. The position of a commander in the field is analogous to the executive head of a big selling concern. A semi-personal knowledge of the foibles and characteristics of his customers without doubt gives him an advantage over a rival concern, neglecting the personal equation being really more important than is generally understood. This has long been recognized and fully taken advantage of by the German Army author ities. AËRIAL Within the last few years an entirely new and according to German ideas most important factor has entered and disturbed the relative military power of European nations. This is the aerial weapon.