Question: Anzac day was created because of a war that took place where?

Context paragraphs:
Shrine of Remembrance: The Shrine of Remembrance, located in Kings Domain on St Kilda Road, Melbourne, Australia was built as a memorial to the men and women of Victoria who served in World War I and is now a memorial to all Australians who have served in war.  It is a site of annual observances of ANZAC Day (25 April) and Remembrance Day (11 November) and is one of the largest war memorials in Australia.

Norman Frederick Hastings: Major Norman Frederick Hastings, DSO (14 July 1879 – 9 August 1915) served as Officer Commanding New Zealand's 6th (Manawatu) Squadron, Wellington Mounted Rifles Regiment.  After serving with British military units during the Second Anglo-Boer War in South Africa, he worked as an engineering fitter with the New Zealand Railways Department workshops at Petone.  He enlisted in the New Zealand Expeditionary Force at the outbreak of World War I, and served with distinction before dying of wounds after the attack on Chunuk Bair, Gallipoli, in August 1915.  He was awarded the Distinguished Service Order (second only to the Victoria Cross for officers), was Mentioned in Despatches, and was one of only 14 members of the New Zealand Army to receive the French Legion of Honour decoration during the war.  The memorial flagstaff at Petone railway station appears to have been erected in his honour, and was the site of New Zealand's first public Anzac Day ceremony on 25 April 1916.

Citizens' War Memorial: The Citizens' War Memorial (alternate: Soldiers' War Memorial) in Cathedral Square, Christchurch, is one of the two major memorials in the city to World War I.  It is located immediately north of ChristChurch Cathedral.  The annual Anzac Day service is held there.  It is a Category I heritage structure registered with Heritage New Zealand.

David John Garland: David John Garland (1864–1939) was an Anglican clergyman and a military chaplain in Queensland, Australia.  As senior army camp chaplain in Queensland from 1914 to 1917, Garland experienced the World War I both at home and at the front.  He was one of the originators of the now annual Anzac Day ceremonies.  Described as an "overpoweringly energetic with a distinctive flair, if not genius, for organisation", he played a pivotal role in the Queensland experience of the war, and was a central figure in a variety of committees and organisations established to aid the war effort and support or commemorate serving or returned soldiers.

Wellington Cenotaph: The Wellington Cenotaph, also known as the Wellington Citizens' War Memorial, is a war memorial in Wellington, New Zealand.  Commemorating the New Zealand dead of World War I, and World War II.  it was unveiled on Anzac Day (25 April) 1931 and is located on the intersection of Lambton Quay and Bowen Street, by the New Zealand Parliament Buildings.  It features two wings decorated with relief sculptures and is topped with a bronze figure on horseback.  Two bronze lions and a series of bronze friezes were later added in commemoration of World War II.  On 18 March 1982, it was registered as a Category I historic place with registration number 215.  It is a focus of Anzac Day commemorations in the city.

Lest we forget (phrase): The phrase "Lest we forget" is commonly used in war remembrance services and commemorative occasions in English speaking countries, in particular Remembrance Day and ANZAC Day.  Before the term was used in reference to soldiers and war, it was first used in a 1897 Christian poem written by Rudyard Kipling called "Recessional".  The phrase occurs 8 times; and is repeated at the end of the first 4 stanzas in order to add particular emphasis regarding the dangers of failing to remember.

Anzac Day: Anzac Day is a national day of remembrance in Australia and New Zealand that broadly commemorates all Australians and New Zealanders "who served and died in all wars, conflicts, and peacekeeping operations" and "the contribution and suffering of all those who have served".  Observed on 25 April each year, Anzac Day was originally to honour the members of the Australian and New Zealand Army Corps (ANZAC) who fought at Gallipoli against the Ottoman Empire during World War I.

National War Memorial (South Australia): The National War Memorial is a monument on the north edge of the city centre of Adelaide, South Australia, commemorating those who served in the First World War.  Opened in 1931, the memorial is located on the corner of North Terrace and Kintore Avenue, adjacent to the grounds of Government House.  Memorial services are held at the site throughout the year, with major services on both Anzac Day (25 April) and Remembrance Day (11 November).

Gallipoli Campaign: The Gallipoli Campaign, also known as the Dardanelles Campaign, the Battle of Gallipoli, or the Battle of Çanakkale (Turkish: "Çanakkale Savaşı" ), was a campaign of the First World War that took place on the Gallipoli peninsula (Gelibolu in modern Turkey) in the Ottoman Empire between 25 April 1915 and 9 January 1916.  The peninsula forms the northern bank of the Dardanelles, a strait that provided a sea route to the Russian Empire, one of the Allied powers during the war.  Intending to secure it, Russia's allies, Britain and France, launched a naval attack followed by an amphibious landing on the peninsula, with the aim of capturing the Ottoman capital of Constantinople (modern Istanbul).  The naval attack was repelled and after eight months' fighting, with many casualties on both sides, the land campaign was abandoned and the invasion force was withdrawn to Egypt.

Fred Keays: Fred Keays (12 July 1898 (WW1 birth record) 1900 (WW2 birth record) – 24 June 1983) was a former Australian rules footballer who played with Fitzroy (1919-1921) and Collingwood (in the 1922 VFL season) in the Victorian Football League (VFL).  After his playing career Fred competed in the 1927 Stawell Gift won by his rival at that time, Tom Miles.  He was a trainer and committee member for Fitzroy spanning 2 decades until the Second World War.  He served for a second time in WW2 having previously served and twice been wounded as a 16-year-old ANZAC in WW1.  His eldest son, Desmond Charles Keays enlisted in 1941, was reported as missing in July 1942 and died in 1945 as a POW at Sandakan camp.  Desmond is also remembered for paying the ultimate price for his country on the Fitzroy Football Club website – Fitzroy Football Club Anzac Day Tribute.

Supporting paragraphs: Anzac Day Gallipoli Campaign
Answer: Gallipoli peninsula