In the days that follow the battle Lee's crippled army escapes back to Virginia, prolonging the war. Now nearly 10,000 rotting bodies lie on the fields, in what is the greatest manmade disaster in American history. Four months after the battle, Abraham Lincoln, standing over fresh graves in Gettysburg, explains to the nation why the brutal war must go on. In his Gettysburg Address Lincoln redefines American democracy expanding freedom.