So there he rose and loosed an enormous cry
and off in the distance Pallas shrieked out too
and drove unearthly panic through the Trojans.
Piercing loud as the trumpet’s battle cry that blasts
from murderous raiding armies ringed around some city –
so piercing now the cry that broke from Aeacides.

– Homer

The Iliad, Book 18, lines 251-256. Achilles, taking his stand in the trench built by the Greeks, lets loose a deafening battle cry that provokes panic in the Trojan troops. Homer in his epic simile says it is as loud as the trump’s battle cry from murderous armies surrouding a city. At the same time goddess Athena also shrieks out, adding to the Trojans’ panic.