Numbers 32:34

And the children of Gad built
Or rather repaired the walls and fortifications, and rebuilt houses which had been demolished in the wars with Sihon and Og; when the following places were taken by the Israelites:

Dibon, and Ataroth, and Aroer;
the two first are mentioned in ( Numbers 32:3 ) . Aroer was a city situated on the river Arnon, and was after this in the hands of the Moabites: Jerom says ^F17, it was showed in his day on the top of the mountain, upon the bank of the river Arnon, which flows into the Dead sea, ( Jeremiah 48:19 ) .