Judges 20:41

37 The men in ambush rushed suddenly against Gibeah; they advanced and put the whole city to the sword.

38 The men of Israel had arranged a signal with the men in ambush: When they sent up a great cloud of smoke from the city,

39 the men of Israel would turn in the battle. When the Benjamites had begun to strike them down, killing about thirty men of Israel, they said, “They are defeated before us as in the first battle.”

40 But when the column of smoke began to go up from the city, the Benjamites looked behind them and saw the whole city going up in smoke.

41 Then the men of Israel turned back on them, and the men of Benjamin were terrified when they realized that disaster had come upon them.

42 So they fled before the men of Israel toward the wilderness, but the battle overtook them, and the men coming out of the cities struck them down there.

43 They surrounded the Benjamites, pursued them, and easily overtook them in the vicinity of Gibeah on the east.

44 And 18,000 Benjamites fell, all men of valor.

45 Then the Benjamites turned and fled toward the wilderness to the rock of Rimmon, and Israel cut down 5,000 men on the roads. And they overtook them at Gidom and struck down 2,000 more.

Read all of Judges 20