Besides these two means, there are three other peculiar ways of directly
increasing the waste of the enemy's force. The first is INVASION, that
is THE OCCUPATION OF THE ENEMY'S TERRITORY, NOT WITH A VIEW TO KEEPING
IT, but in order to levy contributions upon it, or to devastate it.

The immediate object here is neither the conquest of the enemy's
territory nor the defeat of his armed force, but merely to DO HIM DAMAGE
IN A GENERAL WAY. The second way is to select for the object of our
enterprises those points at which we can do the enemy most harm. Nothing
is easier to conceive than two different directions in which our force
may be employed, the first of which is to be preferred if our object is
to defeat the enemy's Army, while the other is more advantageous if the
defeat of the enemy is out of the question. According to the usual mode
of speaking, we should say that the first is primarily military, the
other more political. But if we take our view from the highest point,
both are equally military, and neither the one nor the other can be
eligible unless it suits the circumstances of the case. The third,
by far the most important, from the great number of cases which it
embraces, is the WEARING OUT of the enemy. We choose this expression not
only to explain our meaning in few words, but because it represents the
thing exactly, and is not so figurative as may at first appear. The idea
of wearing out in a struggle amounts in practice to A GRADUAL EXHAUSTION
OF THE PHYSICAL POWERS AND OF THE WILL BY THE LONG CONTINUANCE OF
EXERTION.

Now, if we want to overcome the enemy by the duration of the contest, we
must content ourselves with as small objects as possible, for it is in
the nature of the thing that a great end requires a greater expenditure
of force than a small one; but the smallest object that we can propose