Ewoks used superior knowledge of Endor’s forested terrain to free commandos captured by Imperial stormtroopers.
If your Ewok is present with an escorted captive, draw destiny. Add 2 if Ewok is a scout. If total destiny > escort’s defense value, captive is released. OR If your Ewok is defending a battle, up to three of your Ewoks at one exterior site may move as a ‘react’ (for free).