The flag on the roof of No 10 Downing Street, too, flew at half-mast as a mark of respect to the monarch. The Irish Guards regiment toasts the Princess of Wales, who has been its colonel since 2023.

Queen Elizabeth — but he has been at the center of the festivities in the past two years as sovereign. The parade's origins trace back to the battlefield, when a regiment's flags, called ...

Prince William is checking on his regiment on behalf of his ... Guards are trooping their color — or flag — at the annual birthday parade for the Queen next Thursday. It is one of the main ...