 Pari gbolohun ti o tẹle: A ti fopin si ọmọ-ogun naa ni ọdun 1919, ṣugbọn lati ọdun 1921 ti tun ṣe atunṣe ati dapọ ni ọpọlọpọ igba bi ẹka ipamọ kan, ni akọkọ bi ọmọ-ogun 11th City of Perth Regiment, eyiti o ja ipolongo kukuru kan lodi si awọn ara ilu Japanese lori : Orílẹ-èdè New Britain nígbà Ogun Àgbáyé Kejì. Awọn ẹya miiran ti o ti ṣetọju awọn aṣa ti Battalion 11th atilẹba pẹlu Battalion 11th  44th City of Perth Regiment, A City of Perth Company, 1st Battalion, Royal Western Australia Regiment ati lọwọlọwọ a href11th28th20Battalion2C20Royal20Western20Australia20Regiment11th28th Battalion, Royal Western Australia Regimenta. 