To the formal school of training, which I have hitherto only had in mind, a whole series of exercises must now be coupled, having for their purpose the application of the acquired forms and principles under all circumstances of the ground. But before we proceed to their detail consideration, we must answer the question how far the drill ground only suffices for the purpose of training. Generally, one can subscribe to General von Schlichting's principle--that forms and principles must be learnt in the drill book, but their application in action only in the open country. Tactical exercises on the drill ground, which have not for sole purposes to bring to expression certain formal principles, are always an evil, and mislead the troops. On the other hand, the principles of the tactical employment of Cavalry are particularly suited to representation on the drill ground because they are frequently of a purely formal nature. Keeping firmly to these established principles, then, to define the limits of usefulness of the drill ground, we have only to answer the question within what tactical units this formal drilling is still instructive or possible. My opinion is that the Brigade marks the highest limit, as within it all tactical principles find their application, and it is the largest body which can still in any way be handled by drill methods only. In the Division, and still more in the higher units, the strategical element preponderates so greatly that anything approaching real drill is out of the question, and all movements which they can execute are based on a complete command of these principles already. Of course, it is not intended to prohibit altogether the formal working together of these masses at the beginning in order to secure complete control and knowledge of them for further instruction; but one must not delay over these formal movements a moment longer than absolutely necessary, since the real centre of gravity lies in the practical training, and no doubt must be allowed to exist as to which exercises are intended as purely drill and which as practical preparation for War.