Thucydides - History of the Peloponnesian War (Quote Two)

"There were altogether about 3,000 Hellenic hoplites; the total cavalry force of Macedonians and Chalcidians came to nearly 1,000, and there was also a great crowd of native troops." (Thucydides - 4.124)

Thucydides lived from est. 460 BC to 395 BC.