Bit of a curve ball today: tweeting about parallels between the U.S. civil war and Brexit. #twitterstorians and #Brexit wonks take note. (I'm looking at you @Sime0nStylites, @chrisgreybrexit, @jonlis1, @contestedground, @CeesHeere, @lottelydia, @MHernandezGdV and @Usherwood) /1 Was taking a break from lecture prep and spent some time revisiting a terrific book published in 1963 called "Terrible Swift Sword" by the journalist/historian Bruce Catton. Catton wasn't exactly a professional historian, but his writing about the Civil War was captivating /2