During World War II, Australian territory was directly threatened by Japanese invasion, and Japanese forces attacked Darwin in Northern Australia and Sydney Harbour. In 1941, the ethnic Japanese population in Australia was interned, and most were deported to Japan at the end of the war. Australian forces played an active combat role in battles throughout the Southeast Asia and South West Pacific theater of World War II, most notable events of the war among both parties were the Kokoda Track campaign and the Sandakan Death Marches (of which in 2014, the then Japanese Prime Minister Shinzo Abe offered his sincere condolences on behalf of the Japanese people to the Australian Parliament). Australian forces also played a significant role in the post-war Occupation of Japan.