Joshua 8:24

‘ And so it was that when Israel had made an end of slaying all the inhabitants of Ai out in the countryside, in the wilderness in which they pursued them, and they were all fallen by the edge of the sword until they were consumed, that all Israel returned to Ai and smote it with the edge of the sword.'

Once God's judgment had been carried out on the army of Ai and Bethel, who were caught in the open country, Israel turned their attention to those who remained in Ai, the older people and the women. They too were smitten with the edge of the sword until not one was left. All were ‘devoted' to YHWH.