Almost a million Australians served in the Second World War. From the safety of todays Australia it is hard to imagine why so many of them willingly crossed the world to defend the Empire and all it stood for.But this was a different world, a world of loyalty to Britain and Empire. Of men and women hardened by the experience of economic depression and memories of the First World War. For most of the young men who enlisted the war also promised adventure. Many had never left their hometowns or cities. But all believed in the just cause of a war against fascism. Here we go again, vividly recreates their experience of war - from the heroism of Tobruk to the calamity of the fall of Singapore. Their gripping first hand accounts are blended with powerful archival footage of campaigns from North Africa to Malaya. The episode climaxes with the sinking of HMAS Perth, as the Japanese push relentlessly towards Australia at the start of 1942.