Serhiy, a Ukrainian soldier, was badly wounded by shelling in the Zaporizhzhia Oblast.
He was stuck in a crater field for two days with a pierced lung and wounded leg, Serhiy told CNN.
According to CNN, the drone kept sending water and medicine to the wounded soldier to ease Serhiy's pain and allow him to crawl back to safety.
"The combat medics who gave me first aid when they found me were very surprised I survived for two days with a pierced lung," Serhiy told CNN.
Eugene, a soldier of the 15th national guard brigade who operated the drone, told CNN that he wouldn't be able to "live with myself" if he left a fellow soldier to die.
Persons:
Serhiy, Nick Paton Walsh, wouldn't
Organizations:
CNN, Service
Locations:
Ukrainian, Zaporizhzhia Oblast, Wall, Silicon