Judges 20:25, 35, 46-47

And [the fighting men from the tribe of] Benjamin went out of Gibeah against them the second day and again struck to the ground the sons of Israel, eighteen thousand men, all of whom were swordsmen.

And the LORD struck down [the tribe of] Benjamin before Israel, so that the sons of Israel destroyed twenty-five thousand one hundred men of Benjamin that day, all of whom were swordsmen.

So all of Benjamin who fell that day were twenty-five thousand men who drew the sword, all of them brave and able warriors. But six hundred men turned and fled toward the wilderness to the rock of Rimmon and stayed at the rock of Rimmon for four months.