The Australian Army is Australia's military land force. It is part of the Australian Defence Force (ADF) along with the Royal Australian Navy and the Royal Australian Air Force. Although Australian soldiers have been involved in a number of minor and major conflicts throughout its history, only in World War II has Australian territory come under direct attack.
The Australian Army was mobilised in 1938 when World War II began, but didn't see any major action until January 1941, when Japan opened up the war in the Pacific. The army was a part of the defence of the Dutch East Indies, when the Japanese invaded the islands. However, they were unable to stop the Japanese from conquering a large swath of territory through the islands.
The Australian Army was heavily engaged in both the Middle East and the Pacific when the Race invaded in mid 1942. Although outnumbered and out-gunned, they held off the Race, launching raids against them. In 1944, Atvar decided to employ nuclear weapons in an offensive against the Australians, destroying Sydney and Melbourne. This broke the back of the Army and allowed the Race to easily defeat them. After the defeat and annexation of the country, the army was disbanded.