Plutarch, Parallela minora
Frank Cole Babbitt, Ed.

Philip wished to plunder Methonê and Olynthus and, while he was attempting to force a crossing at [p. 271] the Sandanus river, his eye was pierced by an arrow from the bow of a certain Olynthian named Aster, who uttered these words :

Aster to Philip sends this deadly shaft.

But Philip swam back to his friends and was saved, although he lost his eye.¹ So Callisthenes in the third book of his Macedonian History.

Porsenna, king of the Etruscans, made a foray on the other side of the river Tiber and warred against the Romans, and, by intercepting their abundant supply of grain, he oppressed the aforesaid with famine.² But Horatius Codes, who was elected general, took possession of the Wooden Bridge and checked the barbarian horde that sought to cross. But as he was being worsted by the enemy, he ordered his subordinates to cut down the bridge, and so thwarted the barbarian horde that sought to cross. When his eye was struck by an arrow, he threw himself into the river and swam across to his friends. So Theotimus in the second book of his Italian History.³