Read Judges 3:13 Using Other Translations
And he gathered unto him the children of Ammon and Amalek, and went and smote Israel, and possessed the city of palm trees.
He gathered to himself the Ammonites and the Amalekites, and went and defeated Israel. And they took possession of the city of palms.
Eglon enlisted the Ammonites and Amalekites as allies, and then he went out and defeated Israel, taking possession of Jericho, the city of palms.