Avus (Second Macedonian War).
Fought B.C. 198, between 20,000 Macedonians under Philip, and two Roman legions under T. Quinctius Flamininus. A force of 4,000 legionaries penetrated to the rear of Philip's camp, and when Flamininus attacked in front, they fell upon the Macedonian rear, and completely routed them, with a loss of 2,000.