The Iliad 16.160–174

and in a pack they go to lap with their slender tongues the surface of the black water from a dusky spring, belching forth the while blood and gore, the heart in their breasts unflinching, and their bellies gorged full; even in such wise the leaders and rulers of the Myrmidons sped forth round about the valiant squire of the swift-footed son of Aeacus. And among them all stood warlike Achilles, urging on both horses and men that bear the shield. Fifty were the swift ships which Achilles, dear to Zeus, led to Troy, and in each ship at the thole-pins were fifty men, his comrades; and five leaders had he appointed in whom he trusted to give command, and himself in his great might was king over all. The one rank was led by Menesthius of the flashing corselet, son of Spercheius, the heaven-fed river.