For full four years after the conquest of Egypt he was equipping his force and preparing all that was needed for it; before the fifth year was completed, he set forth on his march with the might of a great multitude. This was by far the greatest of all expeditions that we know of. The one that Darius led against the Scythians is nothing compared to it; neither is the Scythian expedition when they burst into Media in pursuit of the Cimmerians and subdued and ruled almost all the upper lands of Asia (it was for this that Darius afterwards attempted to punish them). According to the reports, the expedition led by the sons of Atreus against Troy is also nothing by comparison; neither is the one of the Mysians and Teucrians which before the Trojan war crossed the Bosporus into Europe, subdued all the Thracians, and came down to the Ionian sea, marching southward as far as the river Peneus.