While the Gallipoli Campaign of World War I was Australia's first military test as a new nation, the fighting during the Kokoda campaign represents the first time in the nation's history that its security was directly threatened. The 1942 newsreel documentary, "Kokoda Front Line!" documented the Australian fighting during the campaign and brought the war home for many Australians. Filmed by Damien Parer, it won an Oscar for the documentary category – the first time an Australian film/documentary was awarded an Oscar. Curator, Poppy De Souza, observes: "This iconic newsreel contains some of the most recognised images of Australian troops in the Second World War, images that have contributed to the collective visual memory of the events at Kokoda. ...Parer a war that seemed until this point 'a million miles away'". Although it has since become accepted that an invasion of Australia was not possible, or even planned by the Japanese, at the time there was a very real belief within Australia that this was possible and as such the Kokoda campaign has come to be viewed by some as the battle that "saved Australia". As a result, within the collective Australian psyche, the campaign and particularly the role of the 39th Battalion has become a key part of modern notions of the Anzac legend. Indeed, the Battle of Isurava has been described as "Australia's Thermopylae", although the key premise of this comparison—the idea that the Australians were outnumbered—has since been shown to be inaccurate.