World War II brought significant changes to Alice Springs. Prior to the war, Alice Springs was an extremely isolated settlement of fewer than 500 people. During the war, however, the town was an extremely active staging base, known as No. 9 Australian Staging Camp, and a depot base for the long four-day trip to Darwin. The railway hub in Alice Springs was taken over by military operations and the number of soldiers posted in Alice Springs grew rapidly, as did the number of personnel passing through on their way to and from Darwin. When Darwin was threatened by Japanese forces, the sea routes—the Northern Territory capital's primary means of transportation and resupply—were cut off. The evacuation of Darwin first brought a large number of civilians including elected officials and many of the territory government's records. Alice Springs became the war-time civilian capital of the Northern Territory. When Darwin was bombed by Japanese air forces, a large number of military personnel and their heavy equipment were rapidly moved south to Alice Springs.