If an order has been given which entails a reconnaissance in a certain direction, it is unnecessary that this should be repeated in a subsequent order. Other directions rather, which are indicated by reason of the altered conditions, should be brought to notice, and reference made to the reconnaissance already despatched. Under no circumstances, however, should a cavalry commander be induced, on receiving instructions to reconnoitre in a certain direction, to send a patrol to a point where he knows his patrols to be already in touch with the enemy. The necessary economy of strength can only be effected by leaving the command of the patrol service _entirely in the hands of the cavalry commander_, who must be responsible to his superior officer for the carrying out of the reconnaissance work entrusted to him. The superior officer should only interfere if he discovers obvious mistakes, or if other circumstances render such a step absolutely necessary. He must, for his part, see that orderlies and reporting patrols that come in remain with his staff, and that they are sent back to the squadron when opportunity offers, so as to be available for fighting purposes. This should be made a standing order at manoeuvres. All patrols that are sent out must receive definite orders as to how far they are to advance in any given direction, how long they are to reconnoitre in that direction, and when they are to return. If, at the expiration of such a period, renewed reconnaissance is found necessary in the same direction, relieving patrols should be despatched in good time, _i.e._ before the first patrols have returned; and these fresh patrols should, if possible, meet the returning ones, in order to exchange notes regarding the enemy. For this purpose the outward and homeward routes of the patrols should be prearranged as far as circumstances permit. In manoeuvres, when one officer takes over command from another, he must inquire as to the arrangements made for reconnaissance work, and must take measures accordingly. When a fresh squadron is sent out on reconnaissance, due notice must be given to the squadron to be relieved. The two officers commanding must act in conjunction, so that the officer being relieved can draw in his patrols and the relieving patrols of the new squadron be sent out in good time. It should also be remembered that, in time of war, close reconnaissance would gradually develop from distant reconnaissance, and would not, as a rule, require any fresh dispositions such as are usually found necessary at manoeuvres.