In June 1944, the U.S. initiated the Mariana and Palau Islands campaign. Feightner flew during the Battle of the Philippine Sea that was better known to American pilots as the 'Great Marianas Turkey Shoot' due to the overwhelming losses inflicted upon the naval air forces of Japan. He fought in a series of actions over the next few months including the Battle of Saipan, the Battle of Guam, strikes on Okinawa, and the Battle of Tinian.