1. A mountain system as a battle-field.
We have shown in the preceding chapter how unfavourable mountain ground is to the defensive in a decisive battle, and, on the other hand, how much it favours the assailant. This runs exactly counter to the generally received opinion; but then how many other things there are which general opinion confuses; how little does it draw distinctions between things which are of the most opposite nature! From the powerful resistance which small bodies of troops may offer in a mountainous country, common opinion becomes impressed with an idea that all mountain defence is extremely strong, and is astonished when any one denies that this great strength is communicated to the greatest act of all defence, the defensive battle. On the other hand, it is instantly ready, whenever a battle is lost by the defensive in mountain warfare, to point out the inconceivable error of a system of cordon war, without any regard to the fact that in the nature of things such a system is unavoidable in mountain warfare. We do not hesitate to put ourselves in direct opposition to such an opinion, and at the same time we must mention, that to our great satisfaction, we have found our views supported in the works of an author whose opinion ought to have great weight in this matter; we allude to the history of the campaigns of 1796 and 1797, by the Archduke Charles, himself a good historical writer, a good critic, and above all, a good general.
We can only characterise it as a lamentable position when the weaker defender, who has laboriously, by the greatest effort, assembled all his forces, in order to make the assailant feel the effect of his love of Fatherland, of his enthusiasm and his ability, in a decisive battle when he on whom every eye is fixed in anxious expectation, having betaken himself to the obscurity of thickly veiled mountains, and hampered in every movement by the obstinate ground, stands exposed to the thousand possible forms of attack which his powerful adversary can use against him. Only towards one single side is there still left an open field for his intelligence, and that is in making all possible use of every obstacle of ground; but this leads close to the borders of the disastrous war of cordons, which, under all circumstances, is to be avoided. Very far therefore from seeing a refuge for the defensive, in a mountainous country, when a decisive battle is sought, we should rather advise a general in such a case to avoid such a field by every possible means.
It is true, however, that this is sometimes impossible; but the battle will then necessarily have a very different character from one in a level country: the disposition of the troops will be much more extended in most cases twice or three times the length; the resistance more passive, the counter blow much less effective. These are influences of mountain ground which are inevitable; still, in such a battle the defensive is not to be converted into a mere defence of mountains; the predominating character must be a concentrated order of battle in the mountains, in which everything unites into one battle, and passes as much as possible under the eye of one commander, and in which there are sufficient reserves to make the decision something more than a mere warding off, a mere holding up of the shield. This condition is indispensable, but difficult to realise; and the drifting into the pure defence of mountains comes so naturally, that we cannot be surprised at its often happening; the danger in this is so great that theory cannot too urgently raise a warning voice.
Thus much as to a decisive battle with the main body of the army.
For combats of minor significance and importance, a mountainous country, on the other hand, may be very favourable, because the main point in them is not absolute defence, and because no decisive results are coupled with them. We may make this plainer by enumerating the objects of this reaction.
a. Merely to gain time. This motive occurs a hundred times: always in the case of a defensive line formed with the view of observation; besides that, in all cases in which a reinforcement is expected.
b. The repulse of a mere demonstration or minor enterprise of the enemy. If a province is guarded by mountains which are defended by troops, then this defence, however weak, will always suffice to prevent partisan attacks and expeditions intended to plunder the country. Without the mountains, such a weak chain of posts would be useless.
c. To make demonstrations on our own part. It will be some time yet before general opinion with respect to mountains will be brought to the right point; until then an enemy may at any time be met with who is afraid of them, and shrinks back from them in his undertakings. In such a case, therefore, the principal body may also be used for the defence of a mountain system. In wars carried on with little energy or movement, this state of things will often happen; but it must always be a condition then that we neither design to accept a general action in this mountain position, nor can be compelled to do so.
d. In general, a mountainous country is suited for all positions in which we do not intend to accept any great battle, for each of the separate parts of the army is stronger there, and it is only the whole that is weaker; besides, in such a position, it is not so easy to be suddenly attacked and forced into a decisive battle.
e. Lastly, a mountainous country is the true region for the efforts of a people in arms. But while national risings should always be supported by small bodies of regular troops, on the other hand, the proximity of a great army seems to have an unfavourable effect upon movements of this kind; this motive, therefore, as a rule, will never give occasion for transferring the whole army to the mountains.
Thus much for mountains in connection with the positions which may be taken up there for battle.