'Battle' in the Bible

about 40,000 [men] armed and equipped for war crossed for battle before the Lord to the desert plains of Jericho.

Now when the king [and the people] of Ai saw it, the men of the city hurried and got up early and went out to meet Israel in battle, the king and all his people at the appointed [time and] place before the desert plain (the Arabah). But he did not know that there was an ambush against him [waiting] behind the city [on the west side].

There was no city that made peace with the Israelites except the Hivites living in Gibeon; they took all the others in battle.

For it was [the purpose] of the Lord to harden their hearts, to meet Israel in battle so that Israel would utterly destroy them, that they would receive no mercy, but that Israel would destroy them, just as the Lord had commanded Moses.