The Kingdom of God is Within You by Leo Tolstoy Chapter 7 Page 26

this now, will know that it is so at the first attempt at insubordination or at a revolution of the existing order.

Armies, then, are needed by governments and by the ruling classes above all to support the present order, which, far from being the result of the people's needs, is often in direct antagonism to them, and is only beneficial to the government and ruling classes.

To keep their subjects in oppression and to be able to enjoy the fruits of their labor the government must have armed forces.

But there is not only one government. There are other governments, exploiting their subjects by violence in the same way, and always ready to pounce down on any other government and carry off the fruits of the toil of its enslaved subjects.