Note 3 — Chapter XII
Reading edition
In an entirely open country, without natural obstacles, there are few or none of those strategic points, by occupying which in a central position an inferior force is able to multiply its action against the divided masses of the enemy. On the other hand, in a very broken country, such as Switzerland, the number of important strategic points, passes, heads of valleys, bridges, etc., are so multiplied, that either some must be left unoccupied, or the defenders lose, by dissemination, the advantage which concentration upon one or two controlling centres usually confers.