History of the Peloponnesian War

After the battle Heraclea was so terribly reduced that in the first days of the summer following the Boeotians occupied the place and sent away the Lacedaemonian Agesippidas for misgovernment, fearing that the town might be taken by the Athenians while the Lacedaemonians were distracted with the affairs of Peloponnese. The Lacedaemonians, nevertheless, were offended with them for what they had done.

The same summer Alcibiades, son of Clinias, now one of the generals at Athens, in concert with the Argives and the allies, went into Peloponnese with a few Athenian heavy infantry and archers, and some of the allies in those parts whom he took up as he passed, and with this army marched here and there through Peloponnese, and settled various matters connected with the alliance, and among other things induced the Patrians to carry their walls down to the sea, intending himself also to build a fort near the Achaean Rhium. However, the Corinthians and Sicyonians, and all others who would have suffered by its being built, came up and hindered him.