martha raddits is right >> reporter: these are some of the fiercest most dedicated warriors fightinglatest closz of some 30 women is preparing to join close to 30 others who have taken up arms against the terrorist group already. today they are working on their marksmanship. with their italian instructors who wear the unit's signature black presumes. >> reporter: the range in ages 18 to 40. most doing security but some are on the front lines. they were part of the force to free a town from control. >> we stayed for four days. there were a lot of isis, but we fight. we come back safe to our homes. were these women, the fight is deeply personal. >> has any one of your women lost friends or family to isis? >> reporter: we lost a lot of friends. >> reporter: but as the fighters practice their first aid to defend their homeland. their captain tells me that women have a power when it comes to fighting isis. it would be humiliating for an isis fighter to fall at their hands. >> reporter: so isis is more scared of the females than the men? that's a yes. for "nightline," we're in northern ira