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On War

Carl von Clausewitz · c. 1816–1830 (work compiled/rewritten across these years) primary

passage 460 of 539 · BOOK I. ON THE NATURE OF WAR > CHAPTER XVI. Attack on a Theatre of War without the View to a Great (2/3)

in brief
He further lists lesser campaign aims including capturing fortresses and staging combats for trophies or honor, while arguing that such fights still affect peace and should be limited when stakes are high.

had an intrinsic value in itself, and more attention was paid to the convenience and facility with which it could be attacked than to the value of the place itself.

At the same time, the attack of a place of some importance is always a great undertaking, because it causes a very large expenditure; and, in wars in which the whole is not staked at once on the game, this is a matter which ought to be very much considered. Therefore, such a siege takes its place here as one of the most important objects of a strategic attack. The more unimportant a place is, or the less earnestness there is about the siege, the smaller the preparations for it, the more it is done as a thing en passant, so much the smaller also will be the strategic object, and the more it will be a service fit for small forces and limited views; and the whole thing then often sinks into a kind of sham fight, in order to close the campaign with honour, because as assailant it is incumbent to do something.

(d.) A successful combat, encounter, or even battle, for the sake of trophies, or merely for the honour of the arms, sometimes even for the mere ambition of the commanders. That this does happen no one can doubt, unless he knows nothing at all of military history. In the campaigns of the French during the reign of Louis XIV., the most of the offensive battles were of this kind. But what is of more importance for us is to observe that these things are not without objective value, they are not the mere pastime of vanity; they have a very distinct influence on peace, and therefore lead as it were direct to the object. The military fame, the moral superiority of the army and of the general, are things, the influence of which, although unseen, never ceases to bear upon the whole action in war.

The aim of such a combat of course presupposes; (a) that there is an adequate prospect of victory, (b) that there is not a very heavy stake dependent on the issue.—Such a battle fought in straitened relations, and with a limited object, must naturally not be confounded with a victory which is not turned to profitable account merely from moral weakness.

  1. With the exception of the last of these objects (d) they may all be attained without a combat of importance, and generally they are so obtained by the offensive. Now, the means which the assailant has at command without resorting to a decisive battle, are derived from the interests which the defensive has to protect in his theatre of war; they consist, therefore, in threatening his lines of communications, either through objects connected with subsistence, as magazines, fertile provinces, water communications, etc., or important points (bridges, defiles, and such like,) or also by placing other corps in the occupation of strong positions situated inconveniently near to him and from which he cannot again drive us out; the seizure of important towns, fertile districts, disturbed parts of the country, which may be excited to rebellion, the threatening of weak allies, etc., etc. Should the attack effectually interrupt the communications, and in such a manner that the defender cannot re-establish them but at a great sacrifice, it compels the defender to take up another position more to the rear or to a flank to cover the objects, at the same time giving up objects of secondary importance. Thus a strip of territory is left open; a magazine or a fortress uncovered: the one exposed to be overrun, the other to be invested. Out of this, combats greater or less may arise, but in such case they are not sought for and treated as an object of the war but as a necessary evil, and can never exceed a certain degree of greatness and importance.
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topics: courage and cowardice · siege and fortification · strategy and the aims of war

On War · Carl von Clausewitz · 1816–1830