Upon a weak point like this the attack usually directs its blows. The assault with concentrated, and therefore very superior forces, upon a point in front, may certainly be met by a resistance, which is very violent as regards that point, but which is unimportant as regards the whole. After it is overcome, the line is pierced, and the object of the attack attained.
From this it follows that the relative resistance in mountain warfare is, in general, greater than in a level country, that it is comparatively greatest in small posts, and does not increase in the same measure as the masses increase.
Let us now turn to the real object of great battles generally—to the positive victory which may also be the object in the defence of mountains. If the whole mass, or the principal part of the force, is employed for that purpose, then the defence of mountains changes itself eo ipso into a defensive battle in the mountains. A battle, that is the application of all our powers to the destruction of the enemy is now the form, a victory the object of the combat. The defence of mountains which takes place in this combat, appears now a subordinate consideration, for it is no longer the object, it is only the means. Now in this view, how does the ground in mountains answer to the object?
The character of a defensive battle is a passive reaction in front, and an increased active reaction in rear; but for this the ground in mountains is a paralysing principle. There are two reasons for this: first, want of roads affording means of rapidly moving in all directions, from the rear towards the front, and even the sudden tactical attack is hampered by the unevenness of ground; secondly, a free view over the country, and the enemy’s movements is not to be had. The ground in mountains, therefore, ensures in this case to the enemy the same advantages which it gave to us in the front, and deadens all the better half of the resistance. To this is to be added a third objection, namely the danger of being cut off. Much as a mountainous country is favourable to a retreat, made under a pressure exerted along the whole front, and great as may be the loss of time to an enemy who makes a turning movement in such a country, still these again are only advantages in the case of a relative defence, advantages which have no connection with the decisive battle, the resistance to the last extremity. The resistance will last certainly somewhat longer, that is until the enemy has reached a point with his flank-columns which menaces or completely bars our retreat. Once he has gained such a point then relief is a thing hardly possible. No act of the offensive which we can make from the rear can drive him out again from the points which threaten us; no desperate assault with our whole mass can clear the passage which he blocks. Whoever thinks he discovers in this a contradiction, and believes that the advantages which the assailant has in mountain warfare, must also accrue to the defensive in an attempt to cut his way through, forgets the difference of circumstances. The corps which opposes the passage is not engaged in an absolute defence, a few hours’ resistance will probably be sufficient; it is, therefore, in the situation of a small post. Besides this, its opponent is no longer in full possession of all his fighting powers; he is thrown into disorder, wants ammunition, etc. Therefore, in any view, the chance of cutting through is small, and this is the danger that the defensive fears above all; this fear is at work even during the battle, and enervates every fibre of the struggling athlete. A nervous sensibility springs up on the flanks, and every small detachment which the aggressor makes a display of on any wooded eminence in our rear, is for him a new lever, helping on the victory.
These disadvantages will, for the most part, disappear, leaving all the advantages, if the defence of a mountain district consists in the concentrated disposition of the army on an extensive mountain plateau. There we may imagine a very strong front; flanks very difficult of approach, and yet the most perfect freedom of movement, both within and in rear of the position. Such a position would be one of the strongest that there can be, but it is little more than an illusion, for although most mountains are more easily traversed along their crests than on their declivities, yet most plateaux of mountains are either too small for such a purpose, or they have no proper right to be called plateaux, and are so termed more in a geological, than in a geometrical sense.
For smaller bodies of troops, the disadvantages of a defensive position in mountains diminish as we have already remarked. The cause of this is, that such bodies take up less space, and require fewer roads for retreat, etc., etc. A single hill is not a mountain system, and has not the same disadvantages. The smaller the force, the more easily it can establish itself on a single ridge or hill, and the less will be the necessity for it to get entangled in the intricacies of countless steep mountain gorges.
CHAPTER XVI.
Defence of Mountains (Continued)
We now proceed to the strategic use of the tactical results developed in the preceding chapter. We make a distinction between the following points:
1. A mountainous district as a battle-field.
2. The influence which the possession of it exercises on other parts of the country.