Prince Charles III of Britain celebrated his first official birthday parade as sovereign on Saturday, reviving the centuries-old tradition of Trooping the Colour. The parade featured soldiers marching in scarlet coats and bearskin fur hats, accompanied by music from military bands, and the King himself riding on horseback, flanked by his son and grandson. The event marks a significant milestone in Charles' reign, and is a time-honored tradition that celebrates the birthday of the reigning monarch.