Source: Nelson's Complete Book of Bible Maps & Charts, Thomas Nelson Publishers, Nashville, TN;
Holman QuickSource Bible Atlas, Holman Bible Publishers, Nashville, TN.
Judges 10-12 (NIV), Map related verses
8 For eighteen years they (Ammonites) oppressed all the Israelites on the east side of the Jordan in Gilead, the land of the Amorites. 9 The Ammonites also crossed the Jordan to fight against Judah, Benjamin and Ephraim; Israel was in great distress. 17 When the Ammonites were called to arms and camped in Gilead, the Israelites assembled and camped at Mizpah.
3 So Jephthah fled from his brothers and settled in the land of Tob, where a gang of scoundrels gathered around him and followed him.
4 Some time later, when the Ammonites were fighting against Israel, 5 the elders of Gilead went to get Jephthah from the land of Tob. 6 “Come,” they said, “be our commander, so we can fight the Ammonites.”
29 Then the Spirit of the Lord came on Jephthah. He crossed Gilead and Manasseh, passed through Mizpah of Gilead, and from there he advanced against the Ammonites. 32 Then Jephthah went over to fight the Ammonites, and the Lord gave them into his hands. 33 He devastated twenty towns from Aroer to the vicinity of Minnith, as far as Abel Keramim. Thus Israel subdued Ammon.
Jephthah and Ephraim
1 The Ephraimite forces were called out, and they crossed over to Zaphon. They said to Jephthah, “Why did you go to fight the Ammonites without calling us to go with you? We’re going to burn down your house over your head.”
4 Jephthah then called together the men of Gilead and fought against Ephraim. The Gileadites struck them down because the Ephraimites had said, “You Gileadites are renegades from Ephraim and Manasseh.” 5 The Gileadites captured the fords of the Jordan leading to Ephraim,