It is, in fact, no longer possible to handle a force of six regiments according to any set scheme, such as that known as the 'Dreitreffentaktik'--at any rate, not in hilly or difficult country. The transition from one formation to another, the deployment of the whole unit for attack, or the interchange of the duties between the separate lines, are certainly hardly possible on ground over which it is difficult to manoeuvre. It appears, however, to me that the conduct of great Cavalry 'Masses' by ordinary drill methods is not necessary to meet the condition of modern warfare. When once the Cavalry Corps Commander grasps the idea of handling the units at his disposal as the Infantry Corps Commander handles his Divisions, sending in first one Division, and then, according to circumstances, reinforcing it or prolonging the fighting line by drawing on the second one, or by employing the Divisions side by side, assigning to each a definite share in the attainment of the purpose, which he himself keeps steadily in view, there seems no reason why the leadership of such bodies should not be perfectly practicable. Indeed, one may safely say that the result will be all the more certain of attainment the more the final responsibility is concentrated on the one head; for there is obviously a greater possibility of a single mind pursuing consistently a given purpose than of two or more Divisional Commanders following out the same idea independently along the same lines. If, then, when the Corps is united for tactical action, the maintenance of a single Command is quite conceivable, this will be all the more the case in matters of Strategy. It is not so much a question then of handling the corps as a closed unit, for instance, on a single road, but of assigning within a certain sphere a united impulse to the constituent parts of the Command in such directions that in all cases they should reach the ground in force superior to anything the enemy can oppose to them. According to circumstances, different tasks may be assigned to the several Divisions. They may march on different roads, some of them extended, some closed, the only condition being that they all pursue a common strategic purpose, assigned to them by the Corps Commander, according to the same fundamental principles, and are prevented by this higher control from flying out in eccentric directions.