the two burst forth to fight before the gates
like wild boars, a pair of them up on the hilltops
bracing to take some breakneck rout of men and dogs
and the two go slanting in on the charge, shattering timber
round about them, shearing off the trunks at the roots
and a grinding, screeching clatter of tusks goes up
till a hunter spears them, tears their lives out –
so the clatter screeched from the gleaming bronze
that cased their chests as blows piled on blows.

– Homer

The Iliad, Book 12, lines 169-177. Fighting for all they are worth, the Achaeans Polypoetes and Leonteus are likened to two wild boars in an extended Homeric simile, as they heroically make a stand against the Trojan charge at the Achaean gate.