The duchess "took the salute" at the event on Thursday, a royal first for the 37-year-old. Typically, the most senior-ranking member of the royal family that's present at military events and ceremonies will "take the salute," meaning the guards and soldiers face Middleton and salute to her as they pass by. Usually, Queen Elizabeth is the one to take the salute, so it was low-key a huge deal Middleton checked off this major royal milestone.
The Beating Retreat on Thursday evening also included fireworks, horsemanship, pageantry and a parade of over 750 soldiers. The event is always held a few days before the Trooping the Colour celebration, which takes place this Saturday, June 8.
Taking the salute and wearing a wool coat in June? We guess there really is a first for everything.