What does Deuteronomy 3:4 mean?

We took all his cities—there wasn’t a single one we didn’t capture. Sixty cities in all, the whole region of Argob, Og’s kingdom in Bashan. Deuteronomy 3:4 - Modern Text Bible

(Israel captured every city in Og’s territory, showing the completeness of their conquest and the scale of what God enabled them to do.)