If a part of our army occupies an enemy’s province which was undefended, and thus deprives the enemy of very considerable means of keeping up the strength of his army, it is entirely through the battle which our detached body gives the enemy to expect, in case he seeks to recover the lost province, that we remain in possession of the same. both cases, therefore, the mere possibility of a battle has produced results, and is therefore to be classed amongst actual events. Suppose that in these cases the enemy has opposed our troops with others superior in force, and thus forced ours to give up their object without a combat, then certainly our plan has failed, but the battle which we offered at (either of) these points has not on that account been without effect, for it attracted the enemy’s forces to that point. And in case our whole undertaking has done us harm, it cannot be said that these positions, these possible battles, have been attended with no results; their effects, then, are similar to those of a lost battle.

In this manner we see that the destruction of the enemy’s military forces, the overthrow of the enemy’s power, is only to be done through the effect of a battle, whether it be that it actually takes place, or that it is merely offered, and not accepted. 2 Twofold object of the combat But these effects are of two kinds, direct and indirect; they are of the latter, if other things intrude themselves and become the object of the combat -- things which cannot be regarded as the destruction of enemy’s force, but only leading up to it, certainly by a circuitous road, but with so much the greater effect. The possession of provinces, towns, fortresses, roads, bridges, magazines, etc., may be the immediate object of a battle, but never the ultimate one. Things of this description can never be looked upon otherwise than as means of gaining greater superiority, so as at last to offer battle to the enemy in such a way that it will be impossible for him to accept it. Therefore all these things must only be regarded as intermediate links, steps, as it were, leading up to the effectual principle, but never as that principle itself. 3 Examples In 1814, by the capture of Bonaparte’s capital the object of the war was attained. The political divisions which had their roots in Paris came into active operation, and an enormous split left the power of the Emperor to collapse of itself. Nevertheless the point of view from which we must look at all this is, that through these causes the forces and defensive means of Bonaparte were suddenly very much diminished, the superiority of the allies, therefore, just in the same measure increased, and any further resistance then became impossible. It was this impossibility which produced the peace with France. If we suppose the forces of the allies at that moment diminished to a like extent through external causes; if the superiority vanishes, then at the same time vanishes also all the effect and importance of the taking of Paris.

We have gone through this chain of argument in order to show that this is the natural and only true view of the thing from which it derives its importance. It leads always back to the question, What at any given moment of the war or campaign will be the probable result of the great or small combats which the two sides might offer to each other? In the consideration of a plan for a campaign, this question only is decisive as to the measures which are to be taken all through from the very commencement. 4 When this view is not taken, then a false value is given to other things If we do not accustom ourselves to look upon war, and the single campaigns in a war, as a chain which is all composed of battles strung together, one of which always brings on another; if we adopt the idea that the taking of a certain geographical point, the occupation of an undefended province, is in itself anything; then we are very likely to regard it as an acquisition which we may retain; and if we look at it so, and not as a term in the whole series of events, we do not ask ourselves whether this possession may not lead to greater disadvantages hereafter. How often we find this mistake recurring in military history.

We might say that, just as in commerce the merchant cannot set apart and place in security gains from one single transaction by itself, so in war a single advantage cannot be separated from the result of the whole. Just as the former must always operate with the whole bulk of his means, just so in war, only the sum total will decide on the advantage or disadvantage of each item.

If the mind’s eye is always directed upon the series of combats, so far as they can be seen beforehand, then it is always looking in the right direction, and thereby the motion of the force acquires that rapidity, that is to say, willing and doing acquire that energy which is suitable to the matter, and which is not to be thwarted or turned aside by extraneous influences.