Duke and Duchess of Cambridge join the Queen for Gallipoli anniversary ceremony

The Duke and Duchess of Cambridge joined the Queen and Duke of Edinburgh at a ceremony on Sunday honouring those who died in the Gallipoli campaign.

The Cambridges were not due to attend the ceremony, which marked the 100th anniversary of the end of the disastrous First World War campaign.

But after attending a traditional Sunday service at Sandringham's St Mary Magdalene Church , they walked behind the monarch to the nearby war memorial cross for a wreath laying service.

The Duchess, who celebrated her 34th birthday on Saturday, was joined at church by her parents Michael and Carole Middleton, along with her sister Pippa and brother James.

The Queen and Duke of Edinburgh, who is patron of the Gallipoli Association, stood still as the Last Post was played by a bugler and a minute's silence was observed.

They then both placed a wreath at the war memorial dedicated to local men who fought and died in the Great War.

• What was the Gallipoli campaign?

The Gallipoli land campaign against Turkey involved more than 400,000 British and around 140,000 Commonwealth and Irish servicemen.

At dawn on April 25, 1915, Allied troops launched an amphibious attack on the peninsula, which was key to controlling the Dardanelles straits, the crucial route to the Black Sea and Russia.

But the plan, backed by then first lord of the admiralty Winston Churchill, was flawed and the campaign led to stalemate and eventual withdrawal eight months later.

Around 58,000 Allied troops died, including 29,500 from Britain and Ireland, more than 12,000 from France, 11,000 from Australia and New Zealand and 1,500 from India.

The Turks suffered 300,000 casualties, with an estimated 87,000 killed.

The last Allied troops were withdrawn on January 9, 1916.