History of the Peloponnesian War

Whereupon succour was sent, both of the Lacedaemonians themselves and of the Helots, in full force, promptly and on such a scale as never before.

These advanced to Orestheum in Maenalia, and gave orders to their allies among the Arcadians to get together and come close upon their heels to Tegea. After going, all together, as far as the Orestheum, they sent home from there a sixth part of their force—in which were included the older and younger men—to keep guard at home, and with the remainder of their army reached Tegea, where not long afterwards the allies from Arcadia arrived. They sent also to Corinth and to the Boeotians, Phocians and Locrians, bidding them bring aid in all haste to Mantinea.