2 Chronicles 13:15-17

and the men of Judah raised the battle cry. When the men of Judah raised the battle cry, God routed Jeroboam and all Israel before Abijah and Judah.  So the Israelites fled before Judah, and God handed them over to them.  Then Abijah and his people struck them with a mighty blow, and five hundred thousand fit young men of Israel were killed.