Cross reference
Joshua 8:13
13 So they set the people, even all the host that was on the north of the city, and their liers-in-wait that were on the west of the city; and Joshua went that night into the midst of the valley.
Joshua 8:8
8 And it shall be, when ye have seized upon the city, that ye shall set the city on fire; according to the word of Jehovah shall ye do: see, I have commanded you.
Joshua 8:12
12 And he took about five thousand men, and set them in ambush between Beth-el and Ai, on the west side of the city.