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.
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.