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Carl von Clausewitz: Excerpts from On War (1832)

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Assuming therefore that the character of war is modified by the predominance of one of the arms, it will be in the following manner.

An excess of guns will impose a more passive and defensive character on operations. Greater reliance will be placed on strong positions, major natural obstacles, and even on positions in mountainous areas. The idea will be to let terrain difficulties take care of the defense and protection of the guns and to let the enemy court his own destruction. The whole war will proceed at the solemn, formal tempo of a minuet.

Shortage of artillery will have the opposite effect. It will bring attack to the fore—the active principle of movement. Marching, exertion and continuous effort will become arms in themselves, and war will be a brisker, rougher and more variegated business. Great events will be broken down into small change.

Where cavalry is plentiful, wide plains will be sought out and sweeping movements preferred. With the enemy at a distance, we can enjoy greater peace and comfort, without his being able to do the same. Since we are the masters of space, we can be daring in the use of bold flanking movements and generally more audacious maneuvers. Diversions and invasions, insofar as they constitute valid expedients in war, are easily executed.

A serious lack of cavalry impairs the mobility of an army, but without increasing its destructive powers as an excess of artillery does. The war will then be marked by prudent and methodical proceedings. In such a case, the natural tendencies are to stay close to the enemy so as to be able to keep an eye on him; never to make a sudden, or worse, a hasty movement; always to advance one's forces gradually, keeping them well together; and to favor defensive operations and those in rough country. If an attack is necessary, it should be made on the enemy's vital point by the shortest route.

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