The British royals, including Prince Charles, Prince William and Prince Harry, joined Canada's Prime Minister Justin Trudeau and French President Francois Hollande to commemorate the 100th anniversary of the Vimy Ridge battle in France. The group led a solemn ceremony held at the site of the battlefield where over 3,000 Canadian soldiers, under British command, lost their lives in a battle that's considered one of the most important during the war.

"This was, and remains, the single bloodiest day in Canadian military history," said Prince Charles during his speech. "Yet Canadians displayed a strength of character and commitment to one another that is still evident today. They did not waver. This was Canada at its best. The Canadians at Vimy embodied the true north, strong and free."

Experience the ceremony here...

British royals Vimy Ridge

British royals Vimy Ridge

British royals Vimy Ridge

British royals Vimy Ridge

British royals Vimy Ridge

British royals Vimy Ridge

Now, see Prince William and Kate Middleton's first official visit to Paris.