Aeneid 10.260–275

260And now he has the Teucrians and his own camp in sight, standing on the high stern; 261then with his left hand he raised the blazing shield. 262The Dardanians raise a shout to the stars from the walls; hope added rouses their anger; they hurl weapons by hand: just as beneath black clouds Strymonian cranes give their signals and swim through the air with a noise, and flee the south winds with joyful clamour. 267But to the Rutulian king and the Ausonian leaders this seemed a wonder, until they look back and see the ships turned towards the shore and the whole sea gliding in with fleets. 270The crest blazes on his head, flame pours from the plumes at the top, and the golden boss spews vast fires: just as when, on a clear night, comets glow blood-red and baleful, or the blaze of Sirius, that bringer of thirst and disease to sick mortals, rises and saddens the sky with sinister light.