This article investigates the development of a total war mentality in Australia during the First World War. Through a study
of private letters and diaries, it observes the much greater level of popular commitment to the war that emerged in the middle of 1915, and an increasing acceptance throughout that year that the
expanding war had taken on a life of its own, and that it would not end
suddenly or without tremendous sacrifice. By the end of 1915, Australians were showing ever greater levels of dedication to a war offering increasingly less sense of how long it might continue.