A retro festival inspired by the likes of Vera Lynn and Glenn Miller returns to one of Kent’s biggest attractions. The bustling Salute to the ‘40s event is back at the Historic Dockyard Chatham for two days of jazz and big band music, swing dancers, wartime storytelling and behind-the-scenes tours. The annual weekender is a much-visited event for the maritime attraction, drawing in thousands of people who wish to be transported back to the sights and sounds of the 1940s. This year, there’s live music on the main stage from the Glenn Miller Orchestra, Britain’s Got Talent finalists the D-Day Da…