Politicians, members of the Royal Family and veterans are commemorating those who lost their lives in conflict as the UK marks Remembrance Sunday.
A two-minute silence will be held across the country and wreaths will be laid at memorials.
Prince Charles is attending the annual ceremony at the Cenotaph in London and Big Ben will chime at 11:00 GMT.
For the first time the Queen will not lay a wreath but instead watch from the Foreign Office’s balcony.
At the Cenotaph on Whitehall, the Last Post will be played shortly before the Prince of Wales lays the wreath.
The royals are joined by Prime Minister Theresa May, other senior politicians, religious leaders and dignitaries from around the Commonwealth.
A wreath will also be laid at the memorial for the Welsh Guards in London.
As part of services being held across Scotland, more than 100 wreaths will be laid at Edinburgh’s City Chambers and Binyon’s Lines will be read out. First Minister Nicola Sturgeon will attend the service.
Meanwhile, bell ringers are being sought for 2018 to honour the 1,400 ringers who died in World War One.
Sir Stuart Peach, chief of the defence staff, told the Andrew Marr show that the day was one of remembrance and reconciliation.
“Today we mark and remember over a million British and Commonwealth soldiers who died in both world wars. So it is about remembering the sacrifice they made so that we can enjoy the freedom and liberty that we have today,” he said.
“It’s also very important to understand that this is about reconciliation. That nations move on.”
He said that the numbers in the armed forces were 4,000 below the target of 82,000 but denied it left Britain unable to meet global threats.
“The army is big enough to do all the tasks that we give it. But I would be absolutely wrong to say that we don’t have an issue with recruiting,” he said.
On Saturday, events were held around the UK to mark the 99th anniversary of Armistice Day with Big Ben chiming for the first time since August.
The evening saw a Festival of Remembrance held at Albert Hall. Members of the Royal Family watched as Emeli Sande, Tom Odell and other stars performed alongside the Queen’s Colour Squadron and The Band of HM Royal Marines.
The event was held by the Royal British Legion and hosted by the BBC’s Huw Edwards. It commemorated all the British military personnel killed in combat since World War One.