Judges 20:14-16

14Then the [tribe of the] sons of Benjamin gathered from the cities to Gibeah, to go out to battle against the [other] sons of Israel.

15And the Benjamites assembled out of their cities at that time twenty-six thousand men who drew the sword, besides the inhabitants of Gibeah, who assembled seven hundred chosen men.

16Out of all these people were seven hundred choice left-handed men; each one could sling stones at [a target no wider than] a hair and not miss.