Fighter Squadron 1 continued fighting off "Yorktown" with their Grumman F6F Hellcat aircraft in the Gilbert and Marshall Islands campaign, Marianas, Bonin Islands, and Caroline Islands. The squadron was both land based and carrier based and it did night fighting, day fighting, bombing, and escort work. Over a fifteen-month period, VF1 attacked the Imperial Japanese Navy, sank 8 ships and damaged 16. It destroyed 102 airborne enemy planes plus 20 probables while losing only 5 in aerial combat. VF1 also ruined 61 enemy planes on the ground, silenced 46 A-A batteries, and blew up or burned 10 fuel or ammunition dumps. In June 1943, Moore transferred from the USNR to USN.