What does Joshua 10:34 mean?

Joshua passed from Libnah, and all Israel with him, to Lachish, and encamped against it, and fought against it.

Yahweh delivered Lachish into the hand of Israel. He took it on the second day, and struck it with the edge of the sword, with all the souls who were in it, according to all that he had done to Libnah.

Then Horam king of Gezer came up to help Lachish; and Joshua struck him and his people, until he had left him no one remaining.

They took it on that day, and struck it with the edge of the sword. He utterly destroyed all the souls who were in it that day, according to all that he had done to Lachish.

Joshua went up from Eglon, and all Israel with him, to Hebron; and they fought against it.

They took it, and struck it with the edge of the sword, with its king and all its cities, and all the souls who were in it. He left no one remaining, according to all that he had done to Eglon; but he utterly destroyed it, and all the souls who were in it.