Gathering at Cape Hellespublished at 16:27 British Summer Time 24 April 2015
Royal Navy
tweets, external: The Commonwealth and Ireland Memorial Service is now taking place at Cape #Helles. #Gallipoli100
Image source, Royal NavySummary
Events mark the 100th anniversary of the Gallipoli campaign, one of the bloodiest in World War One
Allied forces landed on the beaches of the Gallipoli peninsula in modern-day Turkey in April 1915
Allied forces were locked in an eight-month stalemate with Ottoman troops before pulling out in January 1916
An estimated 131,000 soldiers on both sides of the conflict died during the doomed campaign
It was the first campaign that led to major casualties for Australian and New Zealand forces during the war
Leaders of Australia, New Zealand and Turkey, and Princes Charles and Harry, are among those attending remembrance services
Gathering at Cape Hellespublished at 16:27 British Summer Time 24 April 2015
Image source, Royal NavyRoyal readingpublished at 16:23 British Summer Time 24 April 2015
Image source, EPAPrince Charles was among those to deliver a reading at the memorial service at Cape Helles.
'All who served'published at 16:18 British Summer Time 24 April 2015
Image source, TOLGA BOZOGLUAt the service, Air Chief Marshal Sir Joe French says: "The monument around which we gather together today honours all who served."
Commonwealth and Ireland servicepublished at 16:17 British Summer Time 24 April 2015
Image source, ReutersThe focus is now at the Cape Helles memorial for the Commonwealth and Ireland service.
700 lost on first daypublished at 16:06 British Summer Time 24 April 2015
Image source, Getty Members of the British army's 5th Fusiliers walk past the names of Commonwealth soldiers killed during the Gallipoli campaign.
@JohnMTinsley tweets, external: Today we remember Gallipoli x and especially the Lancashire Fusiliers who lost 700 men on the first morning and won 6 Victoria Crosses.
Postpublished at 16:03 British Summer Time 24 April 2015
Fergal Keane
BBC foreign correspondenttweets, external: #Gallipoli100 At Cape Helles now
Postpublished at 16:00 British Summer Time 24 April 2015
Kate Benyon-Tinker
BBC Middle East producertweets, external: Sail-past of ships from all nations in front of Abide & Cape Helles #Gallipoli100
Postpublished at 16:00 British Summer Time 24 April 2015
Fergal Keane
BBC foreign correspondenttweets, external: #Gallipoli100 Sniffer dog checking rifles of Royal Navy ceremonial guard.
In picturespublished at 15:51 British Summer Time 24 April 2015
Image source, APImage caption, In the New Zealand capital Wellington, soldiers took part in a street parade ahead of 25 April, which is marked as Anzac Day
For more images from today's ceremonies in Gallipoli, and events in Australia and New Zealand, click here for our picture gallery.
Get Involvedpublished at 15:50 British Summer Time 24 April 2015
Mrs M, Hornsby, Australia, emails: We are British and moved to Australia seven years ago. Our children are heavily involved in the ANZAC 'week' with school.
It is amazing how much knowledge my 8, 7 and 5 year olds have absorbed. They are fascinated by the stories and are very excited to go to the dawn service tomorrow. I wouldn't usually take my little ones to an early event, but there is no stopping them!
They honour the men and woman that fought and continue to fight today. It is wonderful to see such respect from the young children. We will never forget in this household.
Princes at Cape Hellespublished at 15:48 British Summer Time 24 April 2015
Phil Mackie
BBC News correspondenttweets, external: Prince Charles & Prince Harry arrive at Helles #Gallipoli100
World War One dresspublished at 15:46 British Summer Time 24 April 2015
Image source, Getty ImagesMounted Turkish gendarmes dressed as World War One Ottoman soldiers for the 100th anniversary commemorations.
Get Involvedpublished at 15:33 British Summer Time 24 April 2015
Mark Jones went out to the region in 2008 while he was serving in the Army. He went across to Gallipoli to do a battlefield tour, they went off the beaten track .
This photo was taken from the top of a bridge:
Image source, Mark JonesBBC iWonder: Exploring Gallipolipublished at 15:29 British Summer Time 24 April 2015
Image source, Getty ImagesImage caption, Indian troops on W beach as stores are being unloaded
The British landings at X and Y beaches at Cape Helles were lightly opposed, but the terrain and lack of co-ordination meant they didn't advance far inland.
At W beach the Lancashire Fusiliers fought a fierce action against Turkish machine gunners and submerged barbed wire, winning the beach at the cost of "six Victoria Crosses before breakfast".
Get Involvedpublished at 15:28 British Summer Time 24 April 2015
James Abbott from North Bay in Canada has written in: My grandfather left the Ottawa Valley to join the Royal Naval Air Service.
He flew a seaplane during the Gallipoli campaign and was shot down and crashed in the water.
He survived, but was shot at from land. So he filled his flight suit with whatever he could and threw it on one of the wings, hoping to draw their fire away.
A destroyer rescued him later and that was the end of his war.
Turkish jetspublished at 15:25 British Summer Time 24 April 2015
Fergal Keane
BBC foreign correspondenttweets, external: #Gallipoli100 Just watching fly past of Turkish jets and waiting for ceremony to begin at Cape Helles
Get Involvedpublished at 15:18 British Summer Time 24 April 2015
Paul Murphy emails: My grandfather - born in Dublin - served with the Dublin Fusiliers and was on board the SS River Clyde on 25.4.15.
He was wounded although I do not know whether this happened at the landing or later in the campaign.
He rarely spoke of his experience there except to say how brave the Turks were.
His opinion of Winston Churchill is better left unsaid.
Postpublished at 15:18 British Summer Time 24 April 2015
Phil Mackie
BBC News correspondenttweets, external: British rifles. Turkish cavalry. Rich symbolism #Gallipoli100
Get Involvedpublished at 15:11 British Summer Time 24 April 2015
Janette Steel, from Dingwall, in the Highlands, writes: My grandfather, Donald Allan, was presumed dead on 12th July 1915, his third wedding anniversary.
He left a wife, two children and a third on the way. His death affected my family because my grandmother took his death so badly.
He had been a regular soldier, serving in India and South Africa but came out of the army in 1908. He said goodbye to Granny at Bridge of Allan.
I hope to go to Hamilton South church in July to lay a poppy cross at the war memorial inside the vestibule there.
Marching bandpublished at 14:54 British Summer Time 24 April 2015
Kate Benyon-Tinker
BBC Middle East Producertweets:, external Colourful Ottoman marching band at Abide #Gallipoli100
