Rubuta ci gaba don wannan sakin layi - Jirgin ruwan ya kasance kusa da Ostiraliya har zuwa tsakiyar 1940, lokacin da aka tura shi don ayyuka a gabashin Atlantic, gami da farautar jiragen ruwan Jamus da shiga cikin Operation Menace. A lokacin 1941, "Australia" ta yi aiki a cikin gida da kuma tekun Indiya, amma an sake sanya shi a matsayin jirgin ruwa na ANZAC Squadron a farkon 1942. A matsayin wani ɓangare na wannan ƙarfin (wanda daga baya aka sake masa suna Task Force 44, sannan Task Force 74), "Australia" ta yi aiki don tallafawa ayyukan sojan ruwa na Amurka da na amphibious a duk faɗin kudu maso gabashin Asiya har zuwa farkon 1945, gami da shiga cikin yaƙe-yaƙe a Tekun Coral
da kuma Savo Island, da amphibious saukowa a Guadalcanal da Leyte Gulf, da kuma ayyuka masu yawa a lokacin yakin New Guinea. An tilasta masa janyewa bayan jerin hare-haren kamikaze yayin mamayewa na Lingayen Gulf. Daidaita aikin aikin jirgi a Ostiraliya don jiragen ruwa na British Pacific Fleet ya ga jirgin ruwa na Australiya ya tashi zuwa Ingila don gyara, inda ta kasance a ƙarshen yakin.