Col. Joshua Lawrence Chamberlain left behind a quiet life and a career as a college professor to fight for the Union. Gen. Thomas "Stonewall" Jackson was a man of great religious faith who served in the defense of the Confederacy. And Gen. Robert E. Lee, who led the Confederate army, was a man who was forced to choose between his loyalty to the United States and his love of the Southern states where he was born and raised. As Chamberlain, Jackson, and Lee are followed through the declaration of war and the battles at Manassas, Antietam, Frederickburg, and Chancellorsville.