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.
Upon this he said, not without reluctance, that he would advise upon that matter more at leisure with his colleagues; as far however as he could see at present, they must sail with at least one hundred galleys—the Athenians providing as many transports as they might determine, and sending for others from the allies—not less than five thousand heavy infantry in all, Athenian and allied, and if possible more; and the rest of the armament in proportion; archers from home and from Crete, and slingers, and whatever else might seem desirable, being got ready by the generals and taken with them.
Upon hearing this the Athenians at once voted that the generals should have full powers in the matter of the numbers of the army and of the expedition generally, to do as they judged best for the interests of Athens.