The horses trotted out two by two to greet President Trump for his visit to Windsor Castle earlier this year. There he stood in the centuries-old quadrangle, arms straight and face sombre, watching an extravagant British fantasy of horse-drawn pomp, ceremony and rigour. And of all of the military units tasked with appealing to his sense of status, it was The King’s Troop that led the party.
The Troop is a mounted ceremonial unit that was founded by King George VI in 1946. In a rapidly…

