To mark the 150th anniversary of the battle of Gettysburg, TIME has published a richly illustrated 192-page book, Gettysburg: Turning Point of the Civil War. To buy a copy, go to time.com/gettysburgbook
Gettysburg: In the Footsteps of Mathew Brady
Photographer Todd Harrington revisited the sites shown in images originally captured by Mathew Brady and Timothy O'Sullivan to reveal how the setting of the Civil War's most important turning point has evolved in the past century and a half.
Mathew Brady / Library of Congress
1863: Little Round Top, left, and Big Round Top
The locale of one of the most famous counterattacks of the Civil War, Little Round Top was defended successfully against Confederate troops on the second day of the battle at Gettysburg.
