The Egyptians generally now joined in the revolt; and the remnant of the Persian army was shut up in Memphis.

Inarus had asked the aid of Athens; and an Athenian fleet of 200 sail was sent to his assistance.

This fleet sailed up the Nile, defeated a Persian squadron, and took part in the capture of Memphis and the siege of its citade (White Castle).

When the Persian king first learned what had happened, he endeavored to rid himself of his Athenian enemies by inducing the Spartans to invade their country; but, failing in his attempt, he had recourse to arms, and, levying a vast host, which he placed under the command of Megabyzus, sent that officer to recover the revolted province.

Megabyzus marched upon Memphis, defeated the Egyptians and their allies in a great battle, relieved the citadel of Memphis from its siege, and recovered the rest of the town.