Cibalis (War of the Two Empires).
Fought October 8, 315, between Constantine the Great, with 20,000 men, and Licinius, Emperor of the East, with 35,000. Constantine was posted in a defile, where he was attacked by Licinius. The attack was repulsed, and Constantine followed the enemy into the open plain, where Licinius rallied his troops, and resumed the offensive. The day seemed lost, when a charge of the right wing, under Constantine in person, once more broke the Illyrians, and Licinius having lost 20,000 of his best troops, abandoned his camp during the night and retreated to Sirmium.