frequently costs the sovereign or commonwealth as little to maintain him in the field as to prepare him for it. The citizens of all the different states of ancient Greece seem to have served in this manner till after the second Persian war; and the people of Peloponnesus till after the Peloponnesian war. The Peloponnesians, Thucydides observes, generally left the field in the summer, and returned home to reap the harvest. The Roman people under their kings, and during the first ages of the republic, served in the same manner. It was not till the siege of Veii that they who stayed at home began to contribute something towards maintaining those who went to war.

In the European monarchies, which were founded upon the ruins of the Roman empire, both before and for some time after the establishment of what is properly called