Judges 20:38-48

38 Now the sign fixed between the men of Israel and those making the surprise attack was that when they made a pillar of smoke go up from the town,
39 The men of Israel were to make a turn about in the fight. And Benjamin had overcome and put to death about thirty of the men of Israel, and were saying, Certainly they are falling back before us as in the first fight.
40 Then the sign went up out of the town in the pillar of smoke, and the Benjamites, turning back, saw all the town going up in smoke to heaven.
41 And the men of Israel had made a turn about, and the men of Benjamin were overcome with fear, for they saw that evil had overtaken them.
42 So turning their backs on the men of Israel, they went in the direction of the waste land; but the fight overtook them; and those who came out of the town were heading them off and putting them to the sword.
43 And crushing Benjamin down, they went after them, driving them from Nohah as far as the east side of Gibeah.
44 Eighteen thousand men of Benjamin came to their death, all strong men of war.
45 And turning, they went in flight to the rock of Rimmon in the waste land: and on the highways five thousand of them were cut off by the men of Israel, who, pushing on hard after them to Geba, put to death two thousand more.
46 So twenty-five thousand of the swordsmen of Benjamin came to their end that day, all strong men of war.
47 But six hundred men, turning back, went in flight to the rock of Rimmon in the waste land, and were living on the rock of Rimmon for four months.
48 And the men of Israel, turning again against the children of Benjamin, put to the sword without mercy all the towns and the cattle and everything there was, burning every town which came into their hands.