Confederate Gen. Thomas "Stonewall" Jackson leads troops at Fredericksburg, both battles at Bull Run, and Chancellorsville.
A horrific battle at Fort Sumter in South Carolina opens the Civil War in April 1861.
In 1862 the ironclads Monitor and Merrimac clash, changing naval warfare forever.
The hesitancy of the Army commander at the Potomac to attack was a source of exasperation for President Lincoln.
John Singleton Mosby was a resourceful Confederate raider.
America's first black regiment, the 54th Massachusetts, fights at Fort Wagner.
Photographer Alexander Gardner captures bloody battlefield scenes.
John Brown attacks Harpers Ferry (W.Va.) in 1859.
Both sides learn the horror of war at the First Battle of Bull Run.
Pickett charges Union forces at Gettysburg.
The Civil War's bloodiest battle changes Gettysburg forever.
Union and Confederate flags are more than symbols of pride.
West Point classmates fight on opposite sides.