2 He stationed troops in all the fortified cities of Judah and put garrisons in Judah and in the towns of Ephraim that his father Asa had captured.

Read 2 Chronicles 17:2 Using Other Translations

And he placed forces in all the fenced cities of Judah, and set garrisons in the land of Judah, and in the cities of Ephraim, which Asa his father had taken.
He placed forces in all the fortified cities of Judah and set garrisons in the land of Judah, and in the cities of Ephraim that Asa his father had captured.
He stationed troops in all the fortified towns of Judah, and he assigned additional garrisons to the land of Judah and to the towns of Ephraim that his father, Asa, had captured.