Every young man in Greece during the fifth and fourth centuries b.c. had to be a soldier or a sailor, whether he liked it or not, for the greater part of his life; we may recall that Socrates ‘trailed a pike’ when he was forty-five at the battle of Delium, and the records of those times certainly show that anyone to whom the life of soldiering appealed had ample opportunity to indulge his taste to the full. If he did not like it, there was little remedy, and no provision for conscientious objection in the city-state. There were some, however, who found an outlet for their surplus energies not in the army of their own city but in that of a foreign overseas power, or even of a neighbouring and rival state, sometimes from choice, often compelled by a variety of causes which we shall shortly mention. It was with the Carians of southern Asia Minor that mercenary service of this sort traditionally originated in the eighth and early part of the seventh centuries b.c.—with their neighbours from Ionia they had long been troubling the shores of the Nile Delta by their freebooting expeditions until Psammetichus I actually took them into his service in his successful attempt to gain the throne of Egypt, and then formally incorporated them in his army, stationing them at Daphnae on the eastern frontier of the Delta. From that time onward Egypt also knew other large bodies of Greek soldiers, still mainly from Asia Minor; in return for their help the Egyptian kings on various occasions sent gifts to the great shrine of Apollo at Branchidae. Later on we find that this habit of mercenary service spread to, and grew in, mainland Greece.