Joshua 8:13

And when they had set the people, assigned to every company and every individual the place which he was to occupy in the attack, even all the host that was on the north of the city, and their liers-in-wait on the west of the city, Joshua went that night into the midst of the valley, moved forward, as though for an attack, under cover of darkness. Thus the main part of the army was on the north side of the city, the ambush of thirty thousand was on the southwest, directly behind the city, and the smaller ambush of five thousand men was ready to attack the flank of the enemy. It was not merely Joshua's military genius which appears in this story, for the plan was made by the Lord, whose purpose was to reassure the army of Israel.