 The only loss during the New Guinea Campaign occurred when the "AE1" disappeared on 14 September 1914, taking three officers and 32 men with it.The first major RAN victory of the war occurred when the cruiser, HMAS "Sydney" sank the German light cruiser, off the Cocos Islands in the Indian Ocean on 9 November 1914.Four Australians were killed in the engagement and another 12 were wounded.