epa10696423 A handout photo made available by Britain's Ministry of Defence shows Britain's King Charles III (front) saluting troops at Horse Guards during the Trooping the Colour parade for King Charles III birthday, in London, Britain, 17 June 2023. The Trooping of the Colour traditionally marks the official birthday of the British Sovereign and features a parade of over 1,400 soldiers, 200 horses and 400 musicians.  EPA/HARLAND QUARRINGTON/Ministry of Defence HANDOUT MANDATORY CREDIT HANDOUT EDITORIAL USE ONLY/NO SALES