Now there was an appointed sign between the men of Israel and the liers in wait, that they should make a great flame with smoke rise up out of the city. Now there was an appointed sign - From this verse to the end of the chapter we have the details of the same operations which are mentioned, in a general way, in the preceding part of the chapter.
Related Commentaries of Judges 20:38
Judges 20:38
38 Now there was an appointed signe between the men of Israel and the liers in wait, that they should make a great flame with smoke rise up out of the city.