Migration Heritage Centre. (2010). Populate or perish: post war migration. Retrieved from http://www.migrationheritage.nsw.gov.au/belongings-home/about-belongings/australias-migration-history/
When the war ended, the government took an entirely new approach to migration. The near invasion of Australia by the Japanese caused a complete rethink of ideal population numbers. As Prime Minister Ben Chifley would later declare, ‘a powerful enemy looked hungrily toward Australia. In tomorrow’s gun flash that threat could come again. We must populate Australia as rapidly as we can before someone else decides to populate it for us.’ i In 1945, the Department of Immigration was established, headed up by Arthur Calwell. It resolved that Australia should have annual population growth of two per cent, of which only half could come from natural increase. 70,000 immigrants a year were needed to make up the difference.