Photographs and re-enactments show the battle of Antietam.
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.
Robert E. Lee is known as much for his character as his leadership.
Sherman's army burns everything from Atlanta to Savannah, Ga.
A profile of Gen. Joshua L. Chamberlain, a rhetoric professor who received the Medal of Honor for his defense of Little Round Top at Gettysburg, Pa.
Battle of Gettysburg aftermath; Lincoln's Gettysburg Address.
Soldiers fight diseases such as typhoid and dysentery.
The Confederate army undermines the Union soldiers at the Battle of Fredericksburg.
Abolitionist Frederick Douglass.
Journalists Alfred Waud, Winslow Homer, Alexander Gardner bring war reports to the homefront.
The battle at Gettysburg affects the townspeople.
In Philadelphia in 1776, a bargain was struck with South Carolina allowing slavery—it was a deal that would lead to disaster. Though not the only issue dividing North and South, slavery would spark the Civil War.
Confederate Lt. Gen. Nathan Bedford Forrest becomes leader of the Ku Klux Klan.
The Battle of Chattanooga establishes Gen. Ulysses S. Grant as a major leader.
Nurse Clara Barton and spy Rosa Greenhow are among women who take on new roles during the conflict.
Flamboyant Zouaves copy Algerian troop tactics, drills and daring.
The Union army defeated the Confederates in the 1864 battles at Franklin and Nashville as spectators watched.
Commercial development threatens historic battlefields.
In 1863 Abraham Lincoln dedicates the military cemetery at Gettysburg.
Jeb Stuart, Virginia general and secret weapon of the South, originated the legend of the "unstoppable cavalry."
Gens. Buford and Sheridan played important parts in the history of the federal cavalry.
Union and Confederacy employ spies.
POW camps; crimes against prisoners.
Jefferson Davis; Mexican War; president of the Confederacy.
The South blames Gen. James Longstreet for defeat at Gettysburg.
Gen. Robert E. Lee's Arlington, Va., home becomes a national military cemetery.
Union forces lay siege to Charleston, S.C., by land and sea
Industrial-age weapons first appear on Civil War battlefields.
Sharpshooters kill Jenny Wade at Gettysburg; 73-year-old John Burns takes arms.
The story of the horrific fight for the strategically vital Mississippi city. Under heavy bombardment, the streets flowed with blood as civilians fled to shelters and caves.
Lincoln gives Grant command of the Union Army.
The Iron Brigade fought heroically at Brawner's Farm, South Mountain and Antietam before suffering devastating losses at Gettysburg.
Men fight against their own family and friends during the Civil War.
Profiles young men who rose to high rank in the Civil War.
Rare photographs depict the deprivations of a soldier's life.
While both sides needed trains, the Union alone had the knowledge and equipment necessary to build them.
In 1859, Rep. Dan Sickles is acquitted of murder by reason of temporary insanity, then he becomes a Union general.
