The Royal Family Lay Wreaths At The Cenotaph On Remembrance Sunday Service at the Cenotaph on Whitehall on November 13, 2016 in London, England.

Britain's Catherine, Duchess of Cambridge, watches from a balcony the Remembrance Sunday ceremony at the Cenotaph on Whitehall, London, on November 13, 2016.

Britain's Queen Elizabeth II arrives for the Remembrance Sunday ceremony at the Cenotaph on Whitehall, London, on November 13, 2016. Services are held annually across Commonwealth countries during Remembrance Day to commemorate servicemen and women who have fallen in the line of duty since World War I. 

Britain's Queen Elizabeth II participates in the Remembrance Sunday ceremony at the Cenotaph on Whitehall, London, on November 13, 2016.

British Prime Minister Theresa May lays a Poppy wreath during the annual Remembrance Sunday Service at the Cenotaph on Whitehall on November 13, 2016 in London, England.

Queen Elizabeth II attends the annual Remembrance Sunday Service at the Cenotaph on Whitehall on November 13, 2016 in London, England. The Queen, senior politicians, including the British Prime Minister and representatives from the armed forces pay tribute to those who have suffered or died at war.

Labour Leader Jeremy Corbyn bows during the annual Remembrance Sunday Service at the Cenotaph on Whitehall on November 13, 2016 in London, England.

British Prime Minister Theresa May lays a wreath during the Remembrance Sunday ceremony at the Cenotaph on Whitehall, London, on November 13, 2016.

British Prime Minister Theresa May lays a wreath during the Remembrance Sunday ceremony at the Cenotaph on Whitehall, London, on November 13, 2016. 

Britain's Catherine, Duchess of Cambridge, watches from a balcony the Remembrance Sunday ceremony at the Cenotaph on Whitehall, London, on November 13, 2016. 

Britain's Sophie, Countess of Wessex watches from a balcony the Remembrance Sunday ceremony at the Cenotaph on Whitehall, London, on November 13, 2016.

Prince Philip, Duke of Edinburgh (L) and Prince Charles (R) attend the annual Remembrance Sunday Service at the Cenotaph on Whitehall on November 13, 2016 in London, England

Victoria Cross holders Bill Speakman, (L) and Johnson Beharry (R) parade during the annual Remembrance Sunday Service at the Cenotaph on Whitehall on November 13, 2016 in London, England. The Queen, senior politicians, including the British Prime Minister and representatives from the armed forces pay tribute to those who have suffered or died at war.

Military personnel stand guard during the annual Remembrance Sunday Service at the Cenotaph on Whitehall on November 13, 2016 in London, England.

Catherine, Duchess of Cambridge attends the annual Remembrance Sunday Service at the Cenotaph on Whitehall on November 13, 2016 in London, England.

A military photographer takes pictures from the roof of a building during the annual Remembrance Sunday Service at the Cenotaph on Whitehall on November 13, 2016 in London, England.

Service personnel parade along Whitehall before the Remembrance Sunday ceremony at the Cenotaph on Whitehall, London, on November 13, 2016. 

Britain's opposition Labour Party Leader Jeremy Corbyn (L) and British Prime Minister Theresa May take part in the Remembrance Sunday ceremony at the Cenotaph on Whitehall, London, on November 13, 2016.

Prince Charles, Prince of Wales arrives at the Guards' Chapel in Wellington Barracks to lay a wreath at the Guards' Memorial for the Welsh Guards' Regimental Remembrance Sunday on November 13, 2016 in London, England.

Prince Charles, Prince of Wales arrives at the Guards' Chapel in Wellington Barracks to lay a wreath at the Guards' Memorial for the Welsh Guards' Regimental Remembrance Sunday on November 13, 2016 in London, England.

Prince Charles, Prince of Wales arrives at the Guards' Chapel in Wellington Barracks to lay a wreath at the Guards' Memorial for the Welsh Guards' Regimental Remembrance Sunday on November 13, 2016 in London, England.

Prince Charles, Prince of Wales arrives at the Guards' Chapel in Wellington Barracks to lay a wreath at the Guards' Memorial for the Welsh Guards' Regimental Remembrance Sunday on November 13, 2016 in London, England. 

Prince Charles, Prince of Wales doffs his hat to members of the Welsh Guard parading past, after he laid a wreath at the Guard's Memorial for the Welsh Guards' Regimental Remembrance Sunday on November 13, 2016 in London, England.

 Prince Charles, Prince of Wales lays a wreath at the Guard's Memorial for the Welsh Guards' Regimental Remembrance Sunday on Horse Guards Road on November 13, 2016 in London, England.

Catherine, Duchess of Cambridge attends the annual Remembrance Sunday Service at the Cenotaph on Whitehall on November 13, 2016 in London, England.

 Catherine, Duchess of Cambridge attends the annual Remembrance Sunday Service at the Cenotaph on Whitehall on November 13, 2016 in London, England. 

 Sophie, Countess of Wessex attends the annual Remembrance Sunday Service at the Cenotaph on Whitehall on November 13, 2016 in London, England.

 Queen Elizabeth II lays her wreath as she attends the annual Remembrance Sunday Service at the Cenotaph on Whitehall on November 13, 2016 in London, England. 

Queen Elizabeth II lays her wreath as she attends the annual Remembrance Sunday Service at the Cenotaph on Whitehall on November 13, 2016 in London, England.

 Queen Elizabeth II lays her wreath as she attends the annual Remembrance Sunday Service at the Cenotaph on Whitehall on November 13, 2016 in London, England.

 Camilla, Duchess of Cornwall attends the annual Remembrance Sunday Service at the Cenotaph on Whitehall on November 13, 2016 in London, England.

Queen Elizabeth II attends the annual Remembrance Sunday Service at the Cenotaph on Whitehall on November 13, 2016 in London, England.

 Prince Charles, Prince of Wales lays his wreath as he attends the annual Remembrance Sunday Service at the Cenotaph on Whitehall on November 13, 2016 in London, England.

Queen Elizabeth II and Prince Philip, Duke of Edinburgh attend the annual Remembrance Sunday Service at the Cenotaph on Whitehall on November 13, 2016 in London, England.

Queen Elizabeth II attends the annual Remembrance Sunday Service at the Cenotaph on Whitehall on November 13, 2016 in London, England

Queen Elizabeth II attends the annual Remembrance Sunday Service at the Cenotaph on Whitehall on November 13, 2016 in London, England. 

 Prime Minister Theresa May carries her wreath as she attends the annual Remembrance Sunday Service at the Cenotaph on Whitehall on November 13, 2016 in London, England.

Prime Minister Theresa May lays her wreath as she attends the annual Remembrance Sunday Service at the Cenotaph on Whitehall on November 13, 2016 in London, England. 

 Prime Minister Theresa May attends the annual Remembrance Sunday Service at the Cenotaph on Whitehall on November 13, 2016 in London, England.

Prime Minister Theresa May bows her head after laying her wreath during the annual Remembrance Sunday Service at the Cenotaph on Whitehall on November 13, 2016 in London, England.

Prime Minister Theresa May carries her wreath as she attends the annual Remembrance Sunday Service at the Cenotaph on Whitehall on November 13, 2016 in London, England.

Prime Minister Theresa May lays her wreath as she attends the annual Remembrance Sunday Service at the Cenotaph on Whitehall on November 13, 2016 in London, England.

(R-L) Prince William, Duke of Cambridge and Prince Harry attends the annual Remembrance Sunday Service at the Cenotaph on Whitehall on November 13, 2016 in London, England.

Prince Harry and Prince William, Duke of Cambridge attend the annual Remembrance Sunday Service at the Cenotaph on Whitehall on November 13, 2016 in London, England.

Catherine, Duchess of Cambridge attends the annual Remembrance Sunday Service at the Cenotaph on Whitehall on November 13, 2016 in London, England.

 Catherine, Duchess of Cambridge attends the annual Remembrance Sunday Service at the Cenotaph on Whitehall on November 13, 2016 in London, England.

Catherine, Duchess of Cambridge and Camilla, Duchess of Cornwall attend the annual Remembrance Sunday Service at the Cenotaph on Whitehall on November 13, 2016 in London, England.

Catherine, Duchess of Cambridge attends the annual Remembrance Sunday Service at the Cenotaph on Whitehall on November 13, 2016 in London, England.

 Catherine, Duchess of Cambridge attends the annual Remembrance Sunday Service at the Cenotaph on Whitehall on November 13, 2016 in London, England.

Catherine, Duchess of Cambridge attends the annual Remembrance Sunday Service at the Cenotaph on Whitehall on November 13, 2016 in London, England.

Sophie, Countess of Wessex attends the annual Remembrance Sunday Service at the Cenotaph on Whitehall on November 13, 2016 in London, England. 

Sophie, Countess of Wessex attends the annual Remembrance Sunday Service at the Cenotaph on Whitehall on November 13, 2016 in London, England.

Sophie, Countess of Wessex attends the annual Remembrance Sunday Service at the Cenotaph on Whitehall on November 13, 2016 in London, England.

Sophie, Countess of Wessex attends the annual Remembrance Sunday Service at the Cenotaph on Whitehall on November 13, 2016 in London, England. 

Sophie, Countess of Wessex attends the annual Remembrance Sunday Service at the Cenotaph on Whitehall on November 13, 2016 in London, England. 

Sophie, Countess of Wessex attends the annual Remembrance Sunday Service at the Cenotaph on Whitehall on November 13, 2016 in London, England.

Catherine, Duchess of Cambridge attends the annual Remembrance Sunday Service at the Cenotaph on Whitehall on November 13, 2016 in London, England.

Britain's Prince William is handed his wreath which he will lay on the Cenotaph during the Remembrance Sunday service at the Cenotaph in London, Sunday, Nov.13, 2016. 

Britain's Queen Elizabeth II and Prince Philip walk out to take part in the Remembrance Sunday service at the Cenotaph in London, Sunday, Nov. 13, 2016.

Britain's Queen Elizabeth II takes part in the Remembrance Sunday service at the Cenotaph in London, Sunday, Nov.13, 2016.

Britain's Prince William, right and his brother Prince Harry carry their wreaths prior to laying them at the Cenotaph during the Remembrance Sunday service at the Cenotaph in London, Sunday, Nov.13, 2016. 

Prince William, Duke of Cambridge attends the annual Remembrance Sunday Service at the Cenotaph on Whitehall on November 13, 2016 in London, England.