The service included readings by veterans and political leaders, musical performances and re-enactments from D-Day.
World leaders including Donald Trump, the Queen, Angela Merkel and Theresa May were in the royal box to watch the event.
Here are some of the best pictures from the service.

17. D-Day 75
Sheridan Smith sings on stage during the D-Day Commemorations. (Photo by Dan Kitwood/Getty Images) | Getty Images Photo: -

18. D-Day 75
President of the United States, Donald Trump and First Lady of the United States, Melania Trump sit next to Queen Elizabeth II as they attend the D-Day Commemorations. Picture: Dan Kitwood/Getty Images | Getty Images Photo: -

19. D-Day 75
Theresa May stands and speaks as she reads a letter written by Captain Skinner. Picture: DANIEL LEAL-OLIVAS/AFP/Getty Images | Getty Images Photo: -

20. D-Day 75
Canadian Prime Minister Justin Trudeau stands and speaks. Picture: MANDEL NGAN/AFP/Getty Images | Getty Images Photo: -

