Still, within reasonable and well-understood limits, the metaphorical term "screen," as denoting the protective aspect of a widespread observing force, is both useful and illuminating. To regard it, as General von Bernhardi does, as a brand-new idea, the result of "reflection and experience" on the needs of modern war, is to convict himself of ignorance of war. Screens of a sort there always have been and always must be: the only new factor is the vastly increased efficacy of modern firearms; and if he could bring himself to concentrate on that new factor, of whose importance he shows himself in other passages to be perfectly aware, he would be able to convert into an intelligible, practical scheme his strange medley of inconsequent generalizations. He is, of course, handicapped by the official Regulations, which, unlike our own, do not formally provide for a "protective Cavalry" as distinguished from the divisional Cavalry, and which seem to be more than usually obscure and confused in their theories about "offensive" and "defensive" screens, and in their hazy suggestions as to what troops are to perform the respective functions; but he cannot or will not see the fundamental fallacy which, like Puck in the play, is tricking and distracting the minds of those who framed the Regulations, and so he himself makes confusion worse confounded. The protective aspect of the screen is no sooner insisted on than it is forgotten, and we have a disquisition on the offensive screen, which appears to be only another name for the normal activities of the Army Cavalry, behind the "veil" formed by whom a second screen is to be established by the divisional Cavalry (p. 87). This, however, is disconcerting, because in the previous chapter (p. 74) we have been told with emphasis that the Army Cavalry "in the most usual case" will not be able to reconnoitre the whole Army front, but will be "concentrated in a decisive direction," and that the divisional Cavalry in such cases, in spite of their unfitness for the task, will have to do the "distant reconnaissance" and "strategical exploration" at all points not directly covered by the main Cavalry mass. And, sure enough, the "veil" just alluded to now disappears in its character as veil, and reappears as a "concentrated" mass. "The principal task of the offensive screen is to defeat the hostile Cavalry, and for this object all available force must be concentrated, for one cannot be strong upon the field of battle" (p. 87). It is amazing that serious exponents of any _métier_ should write in this fashion. A concentrated screen is a contradiction in terms.