In September 1863, the Battle of Chickamauga became one of the bloodiest encounters of the American Civil War, ending in a devastating Union defeat and leaving more than 35,000 men dead or wounded.

A split image: left shows Union soldiers at a tent labeled "Hotel de Ville," one seated and two standing; right shows six Union soldiers in uniform posing around a cannon on grassy ground. Both images ...

The Civil War is often remembered through faded photographs and written accounts, making it feel distant and hard to fully grasp. When those images are brought to life in color, the past takes a new ...