ANZAC Day (25th April) honours the members of the Australian and New Zealand Army Corps (ANZAC) who fought at Gallipoli against the Ottoman Empire. It also marks the anniversary of the first military action fought by the Australian and New Zealand forces during the First World War.
ANZAC day is observed in the Cook Islands, Niue, Pitcairn Islands and Tonga. It was previously a national holiday in Papua New Guinea and Samoa.
To learn more about why Australians celebrate the ill-fated campaign at Gallipoli visit http://www.eyewitnesstohistory.com/gallipoli.htm