If we reflect on the nature of real war, and call to mind what has been said in the third chapter of this book, that every war should be viewed above all things according to the probability of its character, and its leading features as they are to be deduced from the political forces and proportions, and that often—indeed we may safely affirm, in our days, almost always—war is to be regarded as an organic whole, from which the single branches are not to be separated, in which therefore every individual activity flows into the whole, and also has its origin in the idea of this whole, then it becomes certain and palpable to us that the superior stand-point for the conduct of the war, from which its leading lines must proceed, can be no other than that of policy.
From this point of view the plans come, as it were, out of a cast; the apprehension of them and the judgment upon them become easier and more natural, our convictions respecting them gain in force, motives are more satisfying, and history more intelligible.
At all events, from this point of view, there is no longer in the nature of things a necessary conflict between the political and military interests, and where it appears it is therefore to be regarded as imperfect knowledge only. That policy makes demands on the war which it cannot respond to, would be contrary to the supposition that it knows the instrument which it is going to use, therefore, contrary to a natural and indispensable supposition. But if it judges correctly of the march of military events, it is entirely its affair, and can be its only to determine what are the events and what the direction of events most favourable to the ultimate and great end of the war.
In one word, the art of war in its highest point of view is policy, but, no doubt, a policy which fights battles, instead of writing notes.