A battlefield guide to the sites and history of the climactic attack during the American Civil War's Battle of Gettysburg.150 years after the event, the grand near-suicidal attack against the Union position on Cemetery Ridge still emotionally resonates with Gettysburg enthusiasts like no other aspect of the battle. On the afternoon of July 3, Confederate Gen. Robert E. Lee ordered more than 12,000 Southern infantry to undertake what would become the most legendary c...