Every revolt against the Persians, every quarrel among the satraps, helped forward their cause, since they compelled the great king to suspend his attacks against Egypt altogether or to prosecute them at wide intervals: the Egyptians therefore fomented such quarrels, or even, at need, provoked them, and played their game so well that for a long time they had to oppose only a fraction of the Persian forces. Like the Saite Pharaohs before them, they were aware how little reliance could be placed on native troops, and they recruited their armies at great expense from the European Greeks. This occurred at the time when mercenary forces were taking the place of native levies throughout Hellas, and war was developing into a lucrative trade for those who understood how to conduct it: adventurers, greedy for booty, flocked to the standards of the generals who enjoyed the best reputation for kindness or ability, and the generals themselves sold their services to the highest bidder. The Persian kings took large advantage of this arrangement to procure troops: the Pharaohs imitated their example, and in the years which followed, the most experienced captains, Iphicrates, Chabrias, and Timotheus, passed from one camp to another, as often against the will as with the consent of their fatherland. The power of Sparta was at her zenith when Nephorites ascended the throne, and she was just preparing for her expedition to Phrygia. The Pharaoh concluded an alliance with the Lacedomonians, and in 396 B.C. sent to Agesilaus a fleet laden with arms, corn, and supplies, which, however, was intercepted by Conon, who was at that moment cruising in the direction of Rhodes in command of the Persian squadron. This misadventure and the abrupt retreat of the Spartans from Asia Minor cooled the good will of the Egyptian king towards his allies. Thinking that they had abandoned him, and that he was threatened with an imminent attack on the shore of the Delta, he assembled, probably at Pelusium, the forces he had apparently intended for a distant enterprise.