Judges 20:15-17

15At once the Benjamites mobilized twenty-six thousand swordsmen from their towns, in addition to seven hundred able young men from those living in Gibeah.

16Among all these soldiers there were seven hundred select troops who were left-handed, each of whom could sling a stone at a hair and not miss.

17Israel, apart from Benjamin, mustered four hundred thousand swordsmen, all of them fit for battle.