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.