Generally speaking, the conduct of the various reconnoitring organs of the divisional cavalry will be regulated according to the same principles as hold good for the army cavalry. As for the latter, so is it a matter of great importance for the divisional cavalry whether it is acting in friendly or in hostile country. Its methods, too, must be regulated according to its distance from the enemy. It will also endeavour to establish a material and moral superiority over the hostile cavalry. In its relative weakness, however, and its distribution to the columns of the army there must lie certain factors which will leave their stamp upon the conduct of the divisional cavalry.
First of all it is important what part the division to which the cavalry belongs plays in the general scheme. Various cases can be conceived which may have no inconsiderable influence on the character of the reconnaissance which the divisional cavalry must carry out.
It may belong to a column which is advancing between others, and where it has but a comparatively small front for reconnaissance allotted to it. The army cavalry may be in front of it. Or it may be given the task of carrying out the frontal reconnaissance independently. The latter case must be considered the most usual in a great army, when the concentration of the army cavalry in the decisive direction takes place. Or again, it may belong to the flank column of an advancing army, which may or may not be covered by the army cavalry. Finally, it may be part of an independently operating, more or less detached force, and have to perform all the cavalry duties for it. In the last case it will generally be advisable to strengthen it, if possible, from the army cavalry; but in any case its methods will necessarily be of a different kind.
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.
In this lack of freedom in the conduct of the divisional cavalry two facts become apparent. Firstly, that only in very rare cases will the divisional cavalry be able to clear the way for its patrols, as the army cavalry will continually have to do. It is generally, indeed, too weak to fight independently with any prospect of success. It is also, as we have seen, locally dependent, and cannot advance with full freedom even where hindrances to the reconnaissance demand its intervention. Secondly, only in exceptional cases will it be feasible for the divisional cavalry to immediately support its patrols by reconnoitring squadrons.
If the army corps is marching in two columns, the cavalry of each is obviously too weak to push forward squadrons of this kind perhaps several days' march ahead, and, when necessary, to provide for their relief. Somewhat different are the conditions of the advance of a corps upon one road. If it is accompanied by columns on each side, it will generally be possible to mass the greater part of the cavalry of both divisions at the head of the corps, and it will then at times be possible to push forward a reconnoitring squadron. In the case of a flank column, however, the cavalry of the rear division will generally be occupied with securing the flank, and will therefore not usually be available for reinforcing the reconnoitring cavalry in front.
The divisional cavalry will thus usually be able to detail only weak patrols for the distant reconnaissance, and these will often have to reckon with superior hostile cavalry. At least the conditions which obtain in the army of our probable opponents compel us to make these presumptions. The reconnoitring patrols of the divisional cavalry must therefore rely chiefly on cunning and speed in carrying out their duty, and will only be able to attack under especially favourable circumstances, where the enemy whom they meet has no support behind him, or can be attacked with obvious advantage. It is far more important for them than for the patrols of the army cavalry to gain contact with the enemy unsuspected, and not to betray their presence. They must always try first to get distant observation of the enemy, as they will have no fighting support behind them to help them to break through the hostile screen of patrols and win their way to the head of the enemy's columns. Their reports, also, will have to be brought back through the enemy's cavalry.