New Zealand's Governor General Anand Satyanand and Australia's Foreign Minister Stephen Smith joined Turkish officials for a solemn dawn service remembering soldiers from Australia, New Zealand and other allied nations who died in the campaign.
On April 25, 1915, troops under British command landed on the Gallipoli peninsula to wage an ill-fated campaign against the Ottoman Turks.
The Allies recorded 55,000 killed. Turkish casualties were estimated at 250,000.
Visiting the battlefields has become a pilgrimage for many Australians and New Zealanders.