It will therefore be necessary, when advancing against the enemy, to adopt the approach formation, and to seek cover as soon as it is calculated that the hostile artillery are within effective range. In order rightly to calculate this moment the enemy's probable advance must of course be taken into consideration, and, as this may vary greatly according to the pace adopted, it is advisable in this respect not to be too optimistic, but to be deployed rather too early than too late. Taking into consideration the range of modern artillery, the deployment should commence, therefore, in open country, at latest when some 6,500 yards from the enemy.[28] As this distance will diminish very quickly when the opponents are both rapidly advancing, it will certainly be advisable, if the knowledge of the situation in any way allows, to take up the required breadth of front still earlier. I would here lay down that a too rapid advance of our own troops, unless rendered necessary by the situation, is in no way advantageous. It is not generally a question of striking the enemy as far to the front as possible, but of striking surely, and of having sufficient strength in hand to annihilate him in the pursuit. A steady and well-thought-out advance should therefore be undertaken; for a precipitate forward movement distresses the horses quite unnecessarily, renders an appreciation of the situation more difficult, and generally allows of no well-considered action. There is also another reason for avoiding a too rapid advance. This is the fact that in such a case the most important reports generally come in when the force is already in the immediate proximity of the enemy. This disadvantage increases with the rapidity of the advance, as a rapidly moving force will follow more closely on the heels of its reconnoitring patrols. To ride slowly forward and to give the patrols time to send back reports will generally lead to better information as to the situation, and will allow of a better and quicker decision being made. The enormous advantage may then be gained of being deployed earlier than the enemy, and of gaining exterior lines[29] from the beginning. In spite of this, most cavalry leaders, especially at manoeuvres, regard their task as a matter of rapidly covering a certain distance, and see in this the essence of the cavalry spirit. This is, however, by no means so. Coolness, reflection, economy of force in approach and deployment, but that lightning-like decision and action at the proper moment, which can only result from a clear appreciation of the situation, alone make the great cavalry leader. It is just because such opposite qualities must be united in the soul of _one_ man that such leaders are so rare and so difficult to recognise in time of peace.