Judges 20:34-36

And ten thousand select men from all Israel came against Gibeah, and the battle was fierce. But the Benjamites did not know that disaster was upon them. The LORD defeated Benjamin before Israel. And the children of Israel destroyed that day twenty-five thousand one hundred Benjamites; all these drew the sword. So the children of Benjamin saw that they were defeated. The men of Israel had given ground to the Benjamites, because they relied on the men in ambush whom they had set against Gibeah.