Everymantohistribe - Though this must have been four months after the war with Benjamin, Judges 20:47; yet it appears the armies did not disband till they had got the remnant of Benjamin settled, as is here related.
SDA Bible Commentary (limited)
Volume 1-7
24. Departed. After the feast was over and the surviving Benjamites had secured wives, the army was disbanded. The troops must have been away from their homes for at least 5 or 6 months, for the 600 men of Benjamin were hiding in Rimmon for 4 months (ch.20:47).