Rubuta ci gaba don wannan sakin layi - Tare da mamayewar Philippines da aka tsara don tsakiyar Oktoba 1944, "Callaghan" ya yi tururi a cikin allon mai ɗaukar hoto wanda ke gudanar da mahimmancin ƙaddamarwa na farko na filayen jirgin saman Japan a Formosa da Okinawa. A lokacin wani mummunan harin iska na abokan gaba a ranar 14 ga Oktoba, "Callaghan" ya shiga cikin saukar da jiragen sama da dama. Sailing don tsayawa tsaro daga yankin mamayewa a Leyte, "Callaghan" ya ba da gudummawar ikon iska a cikin yakin basasa na Leyte Gulf, yana taimakawa wajen tabbatar da cewa Allied ya ci gaba a Philippines a kan kokarin da Japan ta yi don karya saukar. Bayan bin Jafananci zuwa arewa, "Callaghan" ya koma don tallafawa ayyukan Philippines
, tare da Rundunar Sojoji ta Uku, don hare-haren iska a Luzon. A kan hanya a ranar 3 ga watan Nuwamba, an yi wa torpedo, kuma "Callaghan" ya tsaya don kare jirgin ruwa mai haske har sai sojojin agaji suka isa, lokacin da "Callaghan" ya iya komawa ƙungiyarta don hare-haren. Ta hanyar Disamba, ta shiga cikin karin hare-haren iska a tsakiyar Philippines, kuma a cikin Janairu 1945, mai hallaka ya tashi tare da 3rd Fleet don hare-haren iska a kan Formosa, Luzon, Indo-China, Hong Kong, da Nansei Shoto.