Mass Killing

Makkedah, too, Joshua captured and put to the sword at that time.  He fulfilled the doom on the city, on its king, and on every person in it, leaving no survivors.  Thus he did to the king of Makkedah what he had done to the king of Jericho.  Joshua then passed on with all Israel from Makkedah to Libnah, which he attacked.  Libnah also, with its king, the LORD delivered into the power of Israel.  He put it to the sword with every person there, leaving no survivors.  Thus he did to its king what he had done to the king of Jericho.  (Joshua 10:28-30 NAB)