History of the Peloponnesian War

So they went forth with their children and their wives, and being received by Athens from the hatred that she now felt for the Lacedaemonians, were located at Naupactus, which she had lately taken from the Ozolian Locrians.

The Athenians received another addition to their confederacy in the Megarians; who left the Lacedaemonian alliance, annoyed by a war about boundaries forced on them by Corinth. The Athenians occupied Megara and Pegae, and built the Megarians their long walls from the city to Nisaea, in which they placed an Athenian garrison. This was the principal cause of the Corinthians conceiving such a deadly hatred against Athens.

Meanwhile Inaros, son of Psammetichus, a Libyan king of the Libyans on the Egyptian border, having his head-quarters at Marea, the town above Pharos, caused a revolt of almost the whole of Egypt from King Artaxerxes, and placing himself at its head, invited the Athenians to his assistance.

Abandoning a Cyprian expedition upon which they happened to be engaged with two hundred ships of their own and their allies, they arrived in Egypt and sailed from the sea into the Nile, and making themselves masters of the river and two-thirds of Memphis, addressed themselves to the attack of the remaining third, which is called White Castle. Within it were Persians and Medes who had taken refuge there, and Egyptians who had not joined the rebellion.

Meanwhile the Athenians, making a descent from their fleet upon Haliae, were engaged by a force of Corinthians and Epidaurians; and the Corinthians were victorious. Afterwards the Athenians engaged the Peloponnesian fleet off Cecruphalia; and the Athenians were victorious.

Subsequently war broke out between Aegina and Athens, and there was a great battle at sea off Aegina between the Athenians and Aeginetans, each being aided by their allies; in which victory remained with the Athenians, who took seventy of the enemy's ships, and landed in the country and commenced a siege under the command of Leocrates, son of Stroebus.

Upon this the Peloponnesians, desirous of aiding the Aeginetans, threw into Aegina a force of three hundred heavy infantry, who had before been serving with the Corinthians and Epidaurians. Meanwhile the Corinthians and their allies occupied the heights of Geraneia, and marched down into the Megarid, in the belief that with a large force absent in Aegina and Egypt, Athens would be unable to help the Megarians without raising the siege of Aegina.

But the Athenians, instead of moving the army of Aegina, raised a force of the old and young men that had been left in the city, and marched into the Megarid under the command of Myronides.