History of the Peloponnesian War

Each party had the following states in alliance when they set to the war. The allies of the Lacedaemonians were these:

all the Peloponnesians within the Isthmus, except the Argives and Achaeans (these were in friendship with both parties; and the Pellenians were the only people of the Achaeans that joined in the war at first, though afterwards all of them did); and without the Peloponnese, the Megareans, Locrians, Boeotians, Phocians, Ambraciots, Leucadians, and Anactorians.

Of these, the states which furnished a navy were the Corinthians, Megareans, Sicyonians, Pellenians, Eleans, Ambraciots, and Leucadians. Those that supplied cavalry were the Boeotians, Phocians, and Locrians. The rest of them sent infantry. This then was the Lacedaemonian confederacy.

That of the Athenians comprehended the Chians, Lesbians, Plataeans, the Messenians at Naupactus, the greater part of the Acarnanians, the Corcyreans, the Zacynthians: also some other states which were tributary amongst the following nations; as the maritime parts of Caria, and Doris adjacent to it, Ionia, the Hellespont, the Greek towns Thrace-ward; the islands, which were situated between the Peloponnese and Crete, towards the east, [*]( I am inclined to think that αἱ ἂλλαι κυκλάδες may signify the more westerly part of the group, in opposition to πρὸς ἥλιον ἀνίσχουσα. Otherwise Bloomfield's must be the only correct version; namely, all the Cyclades, etc. The fact of both Melos and Thera being amongst the most southerly of all the islands seems entirely to overthrow Göller's interpretation of the passage, which would refer αἱ ἄλλαι κυκλάδες to the islands east of Greece Proper, in contradistinction to the Peloponnese and Crete.) and all the rest of the Cyclades except Melos and Thera.

Of these, the Chians, Lesbians, and Corcyraeans furnished a naval force, the rest of them infantry and money.

Such was the confederacy on each side, and their resources for the war.