Kammala jumla mai zuwa: Jirgin 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 kuma 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 karfi (wanda aka sake sake masa suna Task Force 44, sa'an nan Task Force 74), "Australia" ya yi aiki a cikin goyon bayan Amurka da kuma amphibious ayyukan a ko'ina cikin kudu maso gabashin Asiya har zuwa farkon 1945, ciki har da hannu a cikin yaƙe-yaƙe a Tekun Coral da Savo Island, da amphibious saukowa a Guadalcanal da
Leyte Gulf, da kuma ayyukan da 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.