The Queen has led the nation in honouring the fallen as the country fell silent to remember its war dead.
In scenes replicated at memorials across the length and breadth of the United Kingdom and Commonwealth nations, the monarch laid the first wreath at the Cenotaph to commemorate members of the Armed Forces who died fighting in all conflicts since the First World War.
Other senior royals, including Second World War veteran the Duke of Edinburgh and current RAF pilot the Duke of Cambridge - with wife Kate watching from a balcony - joined the monarch and politicians, military leaders, veterans and serving personnel.
Big Ben struck to mark the 11th hour of the 11th day of the 11th month and Whitehall observed a two-minute silence only punctuated by the hum of distant London traffic and birds. In brilliant autumn sunshine, dignitaries laid wreaths at the Cenotaph before 10,000 veterans marched past to pay their respects to their departed comrades.
The crowds watching the service in central London could be the largest yet, said the Royal British Legion. The charity's head of remembrance, Helen Hill, said that numbers were swollen as recent conflicts brought the realities of war home to a new generation and created "people who are aged 18-and-a-half who are veterans of recent conflicts".
"Once again the British public has shown its support," she said, adding that the number of veterans marching had increased by 3,000 in the last five years. "The numbers are going up, not down. There are an increasing number of associations looking after the veteran community. More and more people want to participate in the activities."
The prime minister of the Republic of Ireland laid a wreath at a remembrance service in Northern Ireland today in a historic first. Taoiseach Enda Kenny attended commemorations in Enniskillen, Co Fermanagh, as the town marked 25 years since the IRA Poppy Day bomb - an attack that claimed 12 lives. The symbolic visit, which saw Mr Kenny lay a laurel wreath at the town's war memorial, came as the Republic's deputy prime minister, Tanaiste Eamon Gilmore, joined dignitaries at a service in Belfast.
In Scotland, First Minister Alex Salmond joined other public figures to lay a wreath on behalf of the people of Scotland before he attended a Service of Remembrance at St Giles' Cathedral. He said: "Today presents every man, woman and child in Scotland with the opportunity to pause and reflect on the immense sacrifice which so many have made to protect our way of life and freedom down the years."
In Wales, hundreds of people turned out at Wales' National Service in Cathays Park, Cardiff, in solemn reflection and prayers for peace. First Minister Carwyn Jones described the service as poignant - and said the thoughts of those attending were replicated at memorials across the country.
The Prince of Wales and Duchess of Cornwall had earlier attended a ceremony in Auckland as part of their Jubilee tour of New Zealand. Under grey skies the royals sat with New Zealand's prime minister John Key, veterans from across the decades, and members of the public around the Auckland Cenotaph.