Civil War Refresher Listen Download Embed Share Share this on Facebook (Opens in a new window) Share this on Twitter (Opens in a new window) Share this via Email In this July 3, 1998 file photo, Confederate troops fire the first shots as they charge against the Union Army during the three-day reenactment of the 135th anniversary of the Battle of Gettysburg. ( Paul Vathis / AP Images ) Produced by WNYC