Judges 20:39-41

39So the men of Israel turned in the battle, and Benjamin began to strike and kill about thirty men of Israel, for they said, “Certainly they are defeated before us as in the first battle!”

40But when the [signal] cloud began to rise out of the city in a column of smoke, the Benjamites looked behind them; and behold, the entire city went up in smoke to heaven.

41When the men of Israel turned back again, the men of Benjamin were terrified, for they saw that disaster had fallen upon them.