The Iliad by Homer Book 18 Page 15

and shout aloud. Minerva also raised her voice from afar, and spread terror unspeakable among the Trojans. Ringing as the note of a trumpet that sounds alarm then the foe is at the gates of a city, even so brazen was the voice of the son of Aeacus, and when the Trojans heard its clarion tones they were dismayed; the horses turned back with their chariots for they boded mischief, and their drivers were awe-struck by the steady flame which the grey-eyed goddess had kindled above the head of the great son of Peleus.

Thrice did Achilles raise his loud cry as he stood by the trench, and thrice were the Trojans and their brave allies thrown into confusion; whereon twelve of their noblest champions fell beneath the wheels of their chariots and perished by their own spears. The Achaeans to their great joy then drew Patroclus out