Each week, American History TV marks the 150th anniversary of the Civil War. This week, authors and historians discuss the Battle of Ball’s Bluff in Leesburg, Virginia, which occurred six months into the war. To this day, the battle – fought on October 21st, 1861 – is the only military action in which a sitting United States senator was killed. Colonel Edward Dickinson Baker, who represented Oregon, died while commanding a Union brigade of General Charles Stone’s division.