The Battle of Lookout Mountain, also referred to as the "Battle Above the Clouds," was a critical engagement during the Chattanooga Campaign of the American Civil War. On November 24, 1863, Union forces led by Maj. Gen. Joseph Hooker attacked Confederate defenders on Lookout Mountain near Chattanooga, Tennessee. The fog-covered mountain provided a dramatic backdrop to the clash, with Union forces ascending the mountain's slopes and defeating the Confederates, led by Maj. Gen. Carter L. Stevenson. This victory paved the way for the Union's subsequent triumph at the Battle of Missionary Ridge.

The strategic significance of Lookout Mountain lay in its oversight of Chattanooga and the surrounding area, vital for both supply and transportation routes. Following their defeat at the Battle of Chickamauga, Union forces had been under siege in Chattanooga. To break this stranglehold, Maj. Gen. Ulysses S. Grant orchestrated a multi-pronged campaign. On the day of the battle, the combination of dense fog and the rugged mountainous terrain made for challenging combat conditions. Despite these obstacles, Union troops managed to push the Confederates off the mountain.

The Battle of Lookout Mountain was not the largest or bloodiest engagement of the war, but its impact was significant. With the Confederate forces ousted from their advantageous position, the Union army gained a morale boost and set the stage for further victories in the region. The action at Lookout Mountain, combined with subsequent battles, eventually forced the Confederate Army of Tennessee into a full retreat. Today, the battle site is preserved as part of the Chickamauga and Chattanooga National Military Park.