Israel set liers-in-wait against Gibeah round about.
These liers-in-wait also set the city on fire, the ascending smoke of which, according to the pre-arranged sign with the other detachment of Israel's army, was the signal for the army of Israel to turn and confront their overconfident enemies, whom they actually surrounded  (Judges 20:43), destroying the total number of Benjamin's fighting men, except for the six hundred that managed to escape.  The next paragraph will supply certain details that are lacking here.