Narrated by Keith Carradine, this third installment in the "Civil War Minutes" series delves into the history of the battle at Gettysburg -- the greatest, most pivotal battle ever fought in the Western hemisphere. Topics include Colonel Strong Vincent's defense of Little Round Top, the cryptic "Devil's Den" photographs, Confederate general Lewis Armistead's secret call for help (after being mortally wounded during "Pickett's Charge") and more.