Peter Ewer. Wounded Eagle: The Bombing of Darwin and Australia's Air Defence Scandal. Chatswood: New Holland, 2009. Based on the author's PhD thesis, this looks at the politics of Australia's air policy before the war as well as the air attacks on Australia during it. It was a random find -- surprised I hadn't heard of it before, given that Ewer is a fellow Melburnian.
Geoffrey Wellum. First Light. London: Penguin, 2009 [2002]. One of the last great airmen's memoirs to come out of the Second World War. I've become more interested in reading some of these since reading The Flyer and Bomber Boys recently: Richard Hillary, Don Charlwood and so on.