The Iliad by Homer Book 5 Page 33

— while yellow Ceres blows with the wind to sift the chaff from the grain, and the chaff-heaps grow whiter and whiter — even so did the Achaeans whiten in the dust which the horses’ hoofs raised to the firmament of heaven, as their drivers turned them back to battle, and they bore down with might upon the foe.

Fierce Mars, to help the Trojans, covered them in a veil of darkness, and went about everywhere among them, inasmuch as Phoebus Apollo had told him that when he saw Pallas Minerva leave the fray he was to put courage into the hearts of the Trojans — for it was she who was helping the Danaans. Then Apollo sent Aeneas forth from his rich sanctuary, and filled his heart with valour, whereon he took his place among his comrades, who were overjoyed at seeing him alive, sound, and of a good courage;