Please list the case numbers of all the incidents with the generic description of "BATTERY" in the IUCR classification.
general description refers to primary_description; 'BATTERY' is the primary_description
SELECT T2.case_number FROM IUCR AS T1 INNER JOIN Crime AS T2 ON T1.iucr_no = T2.iucr_no WHERE T1.primary_description = 'BATTERY'