Meanwhile the Athenians in Egypt and their allies were still there, and encountered all the vicissitudes of war. First the Athenians were masters of Egypt, and the King sent Megabazus a Persian to Lacedaemon with money to bribe the Peloponnesians to invade Attica and so draw off the Athenians from Egypt. Finding that the matter made no progress, and that the money was only being wasted, he recalled Megabazus with the remainder of the money, and sent Megabuzus, son of Zopyrus, a Persian, with a large army to Egypt. Arriving by land he defeated the Egyptians and their allies in a battle, and drove the Hellenes out of Memphis, and at length shut them up in the island of Prosopitis, where he besieged them for a year and six months. At last, draining the canal of its waters, which he diverted into another channel, he left their ships high and dry and joined most of the island to the mainland, and then marched over on foot and captured it. Thus the enterprise of the Hellenes came to ruin after six years of war. Of all that large host a few travelling through Libya reached Cyrene in safety, but most of them perished. And thus Egypt returned to its subjection to the King, except Amyrtaeus, the king in the marshes, whom they were unable to capture from the extent of the marsh; the marshmen being also the most warlike of the Egyptians. Inaros, the Libyan king, the sole author of the Egyptian revolt, was betrayed, taken, and crucified. Meanwhile a relieving squadron of fifty vessels had sailed from Athens and the rest of the confederacy for Egypt. They put in to shore at the Mendesian mouth of the Nile, in total ignorance of what had occurred. Attacked on the land side by the troops, and from the sea by the Phoenician navy, most of the ships were destroyed; the few remaining being saved by retreat. Such was the end of the great expedition of the Athenians and their allies to Egypt. Meanwhile Orestes, son of Echecratidas, the Thessalian king, being an exile from Thessaly, persuaded the Athenians to restore him. Taking with them the Boeotians and Phocians their allies, the Athenians marched to Pharsalus in Thessaly. They became masters of the country, though only in the immediate vicinity of the camp; beyond which they could not go for fear of the Thessalian cavalry. But they failed to take the city or to attain any of the other objects of their expedition, and returned home with Orestes without having effected anything. Not long after this a thousand of the Athenians embarked in the vessels that were at Pegae (Pegae, it must be remembered, was now theirs), and sailed along the coast to Sicyon under the command of Pericles, son of Xanthippus. Landing in Sicyon and defeating the Sicyonians who engaged them, they immediately took with them the Achaeans and, sailing across, marched against and laid siege to Oeniadae in Acarnania. Failing however to take it, they returned home.