Down in a mass the Trojans pounded – Hector led them in,
charging in as a heavy surf roars in against the rip
at a river’s mouth, swelled with rains from Zeus,
and on either side the jutting headlands bellow back
at the booming sea with matching thunder – in they came,
the Trojans roaring in.

– Homer

The Iliad, Book 17, lines 298-303. Hector leads the Trojan attack against the Achaeans guarding the body of Patroclus. An epic simile compares the onslaught of the Trojan army to a huge wave roaring into the mouth of a river swelled by rains from the god Zeus.