Hailed as the social event of the season, the January 19 wedding of a beautiful Southern belle to a dashing brigadier general was one bright moment amid the gloom of 1865. One of Washington D.C.'s most charming and influential socialites, Rose O'Neale Greenhow used her connections to gain information on US Army troop movements before the battle of Manassas. We'll explore the story of this determined woman whose own family was divided by war.