Benjamites may have been genetically disposed to left-handedness at birth, but the trait may also have been encouraged in soldiers to give them a strategic advantage in combat—somewhat like left-handed baseball pitchers today—against right-handed opponents who were unaccustomed to fighting “lefties.” Warriors from the tribe of Benjamin might have been trained to be equally or more effective with their left hands." BiblicalArchaeologyReview
Among all this people there were seven hundred chosen men lefthanded;
every one could sling stones at an hair breadth, and not miss.
Judges 20:16
