Scholars generally consider there to be three main eras in Australian Defense Policy: The Imperial Defense era
(1901-1945), Forward Defense era (1950-1975) and Defense of Australia era (1975-1997). These eras are informed by world events, leaders and outside powers that influence defense policy on the continent. This analytical analysis examines each major conceptual approach and themes defining defense policy throughout Australia’s history. Additionally, it assesses how these themes inform and guide Australia’s contemporary policy. Finally, the analysis provides recommended insights on ways Australia can maintain relevance as a competent middle-power within the Indo-Pacific.