The most simple case is where the front upon which the divisional cavalry finds itself is covered by the army cavalry. It is then most important to keep up communication with, and to be continually informed of the intentions of the army cavalry, in order that the duties of reconnaissance may be taken over whenever the army cavalry is compelled to clear the front by a flank movement or to uncover the flank. The reconnoitring organs of the divisional cavalry must then be sent forward early enough to effect a relief of the corresponding detachments of the army cavalry, so that the service of observation of the enemy in the first line will not be interrupted. Where the divisional cavalry cannot rely upon the army cavalry for assistance in reconnaissance the conditions are different. This leads to the question of the strategical exploration. These duties--in contradistinction to those of the army cavalry--will be distinguished by the fact that the divisional cavalry cannot advance as an independent unit separated from the mass of infantry, but must remain in continual conjunction with the detachments of the other arms to which it belongs. It is, on the one hand, too weak to be able to operate independently, and, on the other, is bound to the column of the other arms by ties of local service, which at any moment may make fresh demands upon it. It will therefore not be denied that the divisional cavalry, if it would reconnoitre, must cleave to the infantry. Its method of procedure will rather be to advance from point to point with those portions of its strength which can be spared from the local service of the division. In so doing, it must arrange for support in case of necessity during the fight from the rear, and can rest at night covered by the infantry outposts without being compelled to march to the rear. To take its own measures for security would make too great demand upon its strength, and would quickly deplete it. Only when the distance from the enemy renders an attack out of the question can the divisional cavalry remain in advanced positions. This consideration, also, must have its due influence on the method of advance adopted. The advance by stages from one point of vantage to another, according to the map, or from one defensible locality to another, will be found advisable. The divisional cavalry, like the reconnoitring squadrons, should always be surrounded by a close screen of local patrols, which will ensure its immediate safety and concealment.