Charles Ellicott Commentary Judges 20:26

"Then all the children of Israel, and all the people, went up, and came unto Beth-el, and wept, and sat there before Jehovah, and fasted that day until even; and they offered burnt-offerings and peace-offerings before Jehovah." — Judges 20:26 (ASV)

And all the people —that is, the non-combatants as well as the fighting men.

To the house of God. —Rather, to Bethel, as in Judges 20:18.

And wept. —These two battles must have caused an almost universal bereavement. (Psalms 137:1; Joel 1:8–14; Joel 2:12–17, and other passages.)

Fasted ... until evening. —As is still common in the East. (Compare to 1 Samuel 14:24, and other passages.)

Burnt offerings and peace offerings. —The former were burnt entirely, and therefore could not be used for food; of the latter, only a part was consumed, and the rest might be eaten by the worshippers. The distinction between the two was that the burnt offerings typified absolute self-dedication, whereas the peace offerings were mainly eucharistic.