Joshua 11:19
“There was not a city that made peace with the children of Israel, save the Hivites the inhabitants of Gibeon: all other they took in battle.”
Even from the mount Halak, that goeth up to Seir, even unto Baal–gad in the valley of Lebanon under mount Hermon: and all their kings he took, and smote them, and slew them.
Joshua made war a long time with all those kings.
There was not a city that made peace with the children of Israel, save the Hivites the inhabitants of Gibeon: all other they took in battle.
For it was of the Lord to harden their hearts, that they should come against Israel in battle, that he might destroy them utterly, and that they might have no favour, but that he might destroy them, as the Lord commanded Moses.
And at that time came Joshua, and cut off the Anakims from the mountains, from Hebron, from Debir, from Anab, and from all the mountains of Judah, and from all the mountains of Israel: Joshua destroyed them utterly with their cities.
Counter-Arguments
The strongest case that this verse does not belong in this theme.

Cross-References
“And when king Arad the Canaanite, which dwelt in the south, heard tell that Israel came by the way of the spies; then he fought against Israel, and took some of them prisoners.”
“But Sihon king of Heshbon would not let us pass by him: for the Lord thy God hardened his spirit, and made his heart obstinate, that he might deliver him into thy hand, as appeareth this day.”
“And it shall be, if it make thee answer of peace, and open unto thee, then it shall be, that all the people that is found therein shall be tributaries unto thee, and they shall serve thee.”
“And Joshua saved Rahab the harlot alive, and her father’s household, and all that she had; and she dwelleth in Israel even unto this day; because she hid the messengers, which Joshua sent to spy out Jericho.”
“And the men of Israel said unto the Hivites, Peradventure ye dwell among us; and how shall we make a league with you?”