This book covers the period from 500 BC to 350 BC and describes the wars between the Persian empire and the Greek city states. It is organised into three separate sections. The first describes Greek and Persian troop types, and the typical army compositions, and then deals with the Great Persian Wars in some detail. The second describes the Peloponnesian War within Greece. The third section details the developments in the Persian Army following the time of Xerxes, and the various campaigns of the 4th Century B.C. as the Greeks took the offensive against Persia. In all three sections typical campaigns have been described in some detail. This book was published in 1975 and has been out of print for many years. It is reprinted here with an updated bibliography.