As Australians and New Zealanders remember soldiers killed in the Gallipoli campaign, in Turkey the history of the fighting is being rewritten.
The 1915 fighting took place on the Gallipoli Peninsula of the then Ottoman Empire.
The soldier Mustafa Kemal Ataturk became the front-line commander, and later introduced widespread secular reforms as the founder of the Republic of Turkey.
Now some of his reforms are under threat, as some Turkish historians reconsider the Gallipoli narrative.
Thea Cowie reports.