Eighty years ago, a young Royal Air Force fighter pilot called Billy Fiske was buried at Boxgrove Priory church in Sussex, one of the prettiest corners of southern England. He’d died of wounds sustained flying a Hawker Hurricane in the Battle of Britain. Nothing especially unusual about that — sadly, some 1,500 RAF aircrew perished in that epic struggle against the Luftwaffe. But if you had been in that medieval church that day, you would have noticed something rather unusual about this funeral. For Fiske’s coffin was draped with two flags — the Union Jack and the Stars and Stripes.