Journey of Israel Through The Desert: To the Mountains of Abarim: Sihon Conquered
Source: TTT
Numbers 21:23–32
But Sihon would not let Israel pass through his territory. Instead, he gathered his whole army and went out to confront Israel in the wilderness. When he came to Jahaz, he fought against Israel. / And Israel put him to the sword and took possession of his land, from the Arnon to the Jabbok—but only up to the border of the Ammonites, because it was fortified. / Israel captured all the cities of the Amorites and occupied them, including Heshbon and all its villages.
Deuteronomy 2:32–36
So Sihon and his whole army came out for battle against us at Jahaz. / And the LORD our God delivered him over to us, and we defeated him and his sons and his whole army. / At that time we captured all his cities and devoted to destruction the people of every city, including women and children. We left no survivors.