Kammala jumla mai zuwa: Charlesworth ya ci gaba da zama dan lokaci na jirgin sama a ranar 1 ga Agusta, 1944. A watan da ya biyo baya an nada shi AOC Arewa maso Yammacin Yankin (NWA) a Darwin, Yankin Arewa, wanda ya maye gurbin Mataimakin Air Marshal Adrian "King" Cole. A wannan mataki na yaki, Allies suna ci gaba da arewa kuma saurin ayyukan a yankin Darwin ya ragu. Nan da nan Charlesworth ya nuna damuwa game da No. 80 Wing, wanda ke aiki da rundunonin Spitfire guda uku, yana gargadin babban kwamandan cewa halin da ake ciki zai iya sauka idan ba a ba shi rawar gani ba a cikin yaƙin ko kuma a canja shi zuwa kudancin Ostiraliya don hutawa. A watan Oktoba, reshen ya karbi umarni don barin NWA don tushen gaba na Morotai don shiga cikin babban rundunar sojojin RAAF, na farko Tactical Air Force; wannan motsi zai bar Charlesworth tare da runduna goma sha biyu a hannunsa, ciki har da ɗayan B-24 Liberator mai ba da bam mai nauyi da wasu rundunonin Spitfire guda uku. A halin yanzu, NWA ta goyi bayan
kai hari kan Leyte tare da hare-hare a kan tashar jiragen ruwa na abokan gaba, kayan aikin mai, da kuma jigilar kayayyaki a cikin Dutch East Indies ta amfani da Beaufighters, B-25 Mitchells, da Liberators. Waɗannan ayyukan sun ci gaba har zuwa Nuwamba-Disamba. A watan Afrilu na 1945, Charlesworth ya aika da Mitchells da Liberators a kan wani jirgin ruwa na Japan wanda ya jagoranci jirgin ruwa; 'yan bindigar sun lalata jirgin ruwa, kuma daga bisani jiragen ruwa na Allied sun nutsar da shi. A wannan watan, NWA's Liberators sun kai hari kan manufofi a Java a cikin jagorancin yakin Tarakan wanda ya fara a ranar 1 ga Mayu. A watan Yuli, umurnin Charlesworth ya rasa yawancin ƙarfinsa yayin da aka canja biyu daga cikin fuka-fuki na bom dinsa zuwa Rundunar Sojojin Sama ta Farko.