History of the Peloponnesian War
Thucydides
Thucydides. History of the Peloponnesian War. Crawley, Richard, translator. London and Toronto: J. M. Dent and Sons Ltd.; New York: E. P. Dutton and Co., 1914.
In this battle the left wing was composed of the Sciritae, who in a Lacedaemonian army have always that post to themselves alone; next to these were the soldiers of Brasidas from Thrace, and the Neodamodes with them; then came the Lacedaemonians themselves, company after company, with the Arcadians of Heraea at their side. After these were the Maenalians, and on the right wing the Tegeans with a few of the Lacedaemonians at the extremity; their cavalry being posted upon the two wings.
Such was the Lacedaemonian formation. That of their opponents was as follows:—On the right were the Mantineans, the action taking place in their country: next to them the allies from Arcadia; after whom came the thousand picked men of the Argives, to whom the state had given a long course of military training at the public expense; next to them the rest of the Argives, and after them their allies, the Cleonaeans and Orneans, and lastly the Athenians on the extreme left, and their own cavalry with them.
Such were the order and the forces of the two combatants. The Lacedaemonian army looked the largest;
though as to putting down the numbers of either host, or of the contingents composing it, I could not do so with any accuracy. Owing to the secrecy of their government the number of the Lacedaemonians was not known, and men are so apt to brag about the forces of their country that the estimate of their opponents was not trusted. The following calculation, however, makes it possible to estimate the numbers of the Lacedaemonians present upon this occasion.
There were seven companies in the field without counting the Sciritae, who numbered six hundred men: in each company there were four Pentecostyes, and in the Pentecosty four Enomoties. The first rank of the Enomoty was composed of four soldiers: as to the depth, although they had not been all drawn up alike, but as each captain chose, they were generally ranged eight deep; the first rank along the whole line, exclusive of the Sciritae, consisted of four hundred and forty-eight men.