Adam Clarke on Judges 3:28

Took the fords of Jordan - It is very likely that the Moabites, who were on the western side of Jordan, hearing of the death of Eglon, were panic-struck, and endeavored to escape over Jordan at the fords near Jericho, when Ehud blew his trumpet in the mountains of Ephraim, and thus to get into the land of the Moabites, which lay on the east of Jordan; but Ehud and his men, seizing the only pass by which they could make their escape, slew ten thousand of them in their attempt to cross at those fords. What is called here the fords was doubtless the place where the Israelites had passed Jordan when they (under Joshua) took possession of the promised land.