The Art of Strategy: Napoleon's Maxims of War + Clausewitz's On War. Carl von Clausewitz
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“A general,” says Frederick, “should direct his whole attention to the tranquility of his cantonments, in order that the soldier may be relieved from all anxiety, and repose in security from his fatigues. With this view, care should be taken that the troops are able to form rapidly upon ground which has been previously reconnoitered; that the generals remain always with their divisions or brigades, and that the service is carried on throughout with exactness.”
Marshal Saxe is of opinion that an army should not be in a hurry to quit its cantonments, but that it should wait till the enemy has exhausted himself with marching, and be ready to fall upon him with fresh troops when he is overcome with fatigue.
I believe, however, that it would be dangerous to trust implicitly to this high authority, for there are many occasions where all the advantage lies in the initiative, more especially when the enemy has been compelled to extend his cantonments, from scarcity of subsistence, and can be attacked before he has time to concentrate his forces.
MAXIM XLVIII.
The formation of infantry in line should be always in two ranks, because the length of the musket only admits of an effective fire in this formation. The discharge of the third rank is not only uncertain, but frequently dangerous to the ranks in its front. In drawing up infantry in two ranks, there should be a supernumerary behind every fourth or fifth file. A reserve should likewise be placed twenty-five paces in rear of each flank.
NOTE.
I am of opinion, if circumstances require a line of infantry to resort to a square, that two-deep is too light a formation to resist the shock of cavalry. However useless the third rank may appear for the purpose of file-firing, it is, notwithstanding necessary, in order to replace the men who fall in the ranks in front; otherwise you would be obliged to close in the files, and by this means leave intervals between the companies, which the cavalry would not fail to penetrate. It appears to me, also, that when infantry is formed in two ranks, the columns will be found to open out in marching to a flank. If it should be considered advantageous behind entrenchments to keep the infantry in two ranks, the third rank should be placed in reserve, and brought forward to relieve the front rank when fatigued, or when the fire is observed to slacken. I am induced to make these remarks, because I have seen an excellent pamphlet which proposes the two-deep formation for infantry as the best. The author supports his opinion by a variety of plausible reasons, but not sufficient, as it appears to me, to answer all the objections that may be offered to this practice.
MAXIM XLIX.
The practice of mixing small bodies of infantry and cavalry together is a bad one, and attended with many inconveniences. The cavalry loses its power of action. It becomes fettered in all its movements. Its energy is destroyed; even the infantry itself is compromised, for on the first movement of the cavalry it is left without support. The best mode of protecting cavalry is to cover its flank.
NOTE.
This also was the opinion of Marshal Saxe. “The weakness of the above formation,” says he, “is sufficient in itself to intimidate the platoons of infantry, because they must be lost if the cavalry is beaten.”
The cavalry, also, which depends on the infantry for succor, is disconcerted the moment a brisk forward movement carries them out of sight of their supports. Marshal Turenne, and the generals of his time, sometimes employed this order of formation; but that does not, in my opinion, justify a modern author for recommending it in an essay, entitled “Considerations sur l’Art de la Guerre.” In fact, this formation has long been abandoned; and, since the introduction of light artillery, it appears to me almost ridiculous to propose it.
MAXIM L.
Charges of cavalry are equally useful at the beginning, the middle, and the end of a battle. They should be made always, if possible, on the flanks of the infantry, especially when the latter is engaged in front.
NOTE.
The Archduke Charles, in speaking of cavalry, recommends that it should be brought in mass upon a decisive point, when the moment for employing it arrives; that is to say, when it can attack with a certainty of success. As the rapidity of its movement enables cavalry to act along the whole line in the same day, the general who commands it should keep it together as much as possible, and avoid dividing it into many detachments. When the nature of the ground admits of cavalry being employed on all points of the line, it is desirable to form it in column behind the infantry, and in a position whence it may be easily directed wherever it is required. If cavalry is intended to cover a position, it should be placed sufficiently in the rear to meet at full speed any advance of troops coming to attack that position. If it is destined to cover the flank of the infantry, it should, for the same reason, be placed directly behind it. As the object of cavalry is purely offensive, it should be a rule to form it at such a distance only from the point of collision as to enable it to acquire its utmost impulse, and arrive at the top of its speed into action. With respect to the cavalry reserve, this should only be employed at the end of a battle, either to render the success more decisive, or to cover the retreat. Napoleon remarks that, at the battle of Waterloo, the cavalry of the guard which composed the reserve, was engaged against his orders. He complains of having been deprived from five o’clock of the use of this reserve, which, when well employed, had so often insured him the victory.
MAXIM LI.
It is the business of cavalry to follow up the victory, and to prevent the beaten enemy from rallying.
NOTE.
Victor or vanquished, it is of the greatest importance to have a body of cavalry in reserve, either to take advantage of victory, or to secure a retreat. The most decisive battles lose half their value to the conqueror, when the want of cavalry prevents him from following up his success, and depriving the enemy of the power of rallying.
When a retiring army is pursued, it is more especially upon the flanks that the weight of cavalry should fall, if you are strong enough in that arm to cut off his retreat.
MAXIM LII.
Artillery is more essential to cavalry than to infantry, because cavalry has no fire for its defence, but depends upon the sabre. It is to remedy this deficiency that recourse has been had to horse-artillery. Cavalry, therefore, should never be without cannon, whether when attacking, rallying, or in position.
NOTE.
Horse-artillery is an invention of Frederick. Austria lost no time in introducing it into her armies, although in an imperfect degree. It was only in 1792 that this arm was adopted in France, where it was brought rapidly to its present perfection.
The services of this arm during the wars of the Revolution were immense. It may be said to have changed to a certain extent the character of tactics, because