Objections based on the alleged difficulties of the conduct of such masses are therefore untenable. On the contrary, the demand must be made on the Chief Command that, always in accordance with the strategical situation, it must clearly determine what it requires of the Cavalry, and group them in a suitable manner and in sufficient numerical strength under a single Leader, even if in the meanwhile there may be a deficiency of the Arm at less important points. This fundamental principle must be adhered to at all costs if full advantages are to be derived from the employment of our Arm, for with none other can the consequences of a dispersal of force exact more terrible retribution than with the Cavalry. Nevertheless, though the principle must be held inviolate, its application must not degenerate into hide-bound rigidity. 'Strategy is founded on a system of expedients' (Moltke), and hence expediency remains always our highest ideal. The essential point, however, is that our organization must be made so elastic that we can alter the strength of our units to meet the varying circumstances which may confront us, so that forces may not remain unutilized in one place whilst they may be most urgently required at another. It is no way essential that the units combined for the express purposes apparent at the commencement of the campaign should remain intact throughout the War. One should be able to detach from or reinforce them, as circumstances require; break up Corps and Divisions, to reform them elsewhere; and employ their Leaders and Staff first with one, then with the other. As an example of what I have just said, I would cite the manner in which the German Headquarters Command dealt with the Armies during the war of 1870-1871. According to the demands of the moment, the individual Corps or Divisions were grouped in manifold proportions to constitute such units, and the adaptability of this organization proved sufficient to cope with every eventuality. As an almost ideal type we can take the manner in which Napoleon dealt with his Cavalry Corps for the same purpose. At one moment his bodies of horsemen unite into Divisions and Corps; at another they dissolve into independent Brigades or regiments, operating singly, only once more to be united into formidable 'Masses,' as circumstances dictate. Here we see no rigid adherence to any rules, nothing pedantic in the method of employment, and the leader and troops deftly adapt themselves to the ever-changing conditions. This is the ideal to which we Germans should strive to attain, and all the more so in proportion as we are threatened by superior numbers. CHAPTER IV INCREASED IMPORTANCE OF DISMOUNTED ACTION