On the other hand, in another respect, the attack is always in itself one and the same. But the defensive has its gradations according as the principle of expectancy approaches to an end. This begets forms which differ essentially from each other, as has been developed in the chapter on the forms of defence.
As the principle of the attack is strictly active, and the defensive, which connects itself with it, is only a dead weight; there is, therefore, not the same kind of difference in it. No doubt, in the energy employed in the attack, in the rapidity and force of the blow, there may be a great difference, but only a difference in degree, not in form.—It is quite possible to conceive even that the assailant may choose a defensive form, the better to attain his object; for instance, that he may choose a strong position, that he may be attacked there; but such instances are so rare that we do not think it necessary to dwell upon them in our grouping of ideas and facts, which are always founded on the practical. We may, therefore, say that there are no such gradations in the attack as those which present themselves in the defence.
Lastly, as a rule, the extent of the means of attack consists of the armed force only; of course, we must add to these the fortresses, for if in the vicinity of the theatre of war, they have a decided influence on the attack. But this influence gradually diminishes as the attack advances; and it is conceivable that, in the attack, its own fortresses never can play such an important part as in the defence, in which they often become objects of primary importance. The assistance of the people may be supposed in co-operation with the attack, in those cases in which the inhabitants of the country are better disposed towards the invader of the country than they are to their own army; finally, the assailant may also have allies, but then they are only the result of special or accidental relations, not an assistance