'Fortified Cities' in the Bible

It came about when Joshua and the sons of Israel had finished slaying them with a very great slaughter, until they were destroyed, and the survivors who remained of them had entered the fortified cities,

Now then, give me this hill country about which the Lord spoke on that day, for you heard on that day that Anakim were there, with great fortified cities; perhaps the Lord will be with me, and I will drive them out as the Lord has spoken.”

The fortified cities were Ziddim, Zer and Hammath, Rakkath and Chinnereth,