2 Samuel 12:26
So Joab fought against Rabbah of the Ammonites and captured the royal city.
Deuteronomy 3:11
Only King Og of Bashan was left of the remaining Rephaites. (It is noteworthy that his sarcophagus was made of iron. Does it not, indeed, still remain in Rabbath of the Ammonites? It is thirteen and a half feet long and six feet wide according to standard measure.)
1 Chronicles 20:1-3
In the spring, at the time when kings normally conduct wars, Joab led the army into battle and devastated the land of the Ammonites. He went and besieged Rabbah, while David stayed in Jerusalem. Joab defeated Rabbah and tore it down.
2 Samuel 11:25
David said to the messenger, "Tell Joab, 'Don't let this thing upset you. There is no way to anticipate whom the sword will cut down. Press the battle against the city and conquer it.' Encourage him with these words."