What Happened During The Battle Of Chattanooga In 1863?

Union forces under General Ulysses S. Grant won the Battle of Chattanooga in late November 1863, breaking a Confederate siege and opening a supply route into Tennessee. The Union victory secured Chattanooga as a military hub and enabled Sherman's invasion of Georgia the following spring. Confederate General Braxton Bragg's Army of Tennessee retreated into northwestern Georgia after losing control of the high ground surrounding the city.

The Siege And Blockade

When Union General William Rosecrans withdrew into Chattanooga after losing the Battle of Chickamauga (fought just south of the city in September 1863), Confederate forces under Bragg settled into siege positions on the ridges above. For two months, Confederates held Lookout Mountain to the southwest and Missionary Ridge to the southeast, cutting off Rosecrans's supply lines. Union troops in the city faced starvation; rations fell so low that horses died from malnutrition and soldiers called their situation the "Cracker Line Crisis." Rosecrans telegraphed Washington that his position was untenable without relief.

President Lincoln responded by dispatching Grant from Mississippi with reinforcements. Grant arrived in Chattanooga on October 23, 1863, with authority to reorganize the Union command structure. He replaced Rosecrans with General George Thomas and arranged for additional regiments to be sent from Mississippi and the Army of the Potomac in Virginia. Supply boats and wagons also began moving north, though getting them across flooded rivers and through Confederate-threatened territory took weeks.

The Three-Day Campaign

The battle itself unfolded across three days in late November. On November 24, Grant authorized an attack on Lookout Mountain in dense fog so thick that soldiers called it the "Battle Above the Clouds." Union regiments climbed the steep slopes and drove Confederate defenders off the summit by afternoon. The fog lifted enough for observers in Chattanooga to see the Union flag raised on Lookout Mountain's crest.

The decisive action came the next day at Missionary Ridge. Grant originally planned only to seize the ridge's base to relieve pressure on his left flank, but Union soldiers—many of them Ohio and Indiana regiments—spontaneously charged up the steep slope toward the ridge itself. Confederate defenders had positioned their rifle trenches too high on the ridge, so their fire passed over the heads of ascending Union troops. The uphill assault succeeded despite being tactically unsound. Confederate regiments broke and retreated toward Georgia, and Bragg lost the initiative entirely.

Casualties were moderate by Civil War standards: Union forces lost approximately 750 killed and wounded, while Confederate losses reached roughly 1,100 killed and wounded, plus several hundred captured.

Strategic Consequences For Chattanooga

Chattanooga's victory transformed the city from a besieged enclave into a strategic base for Union operations in the Deep South. Sherman used Chattanooga as his jumping-off point for the Atlanta Campaign in spring 1864. The city's rail connections to Nashville, Louisville, and Cincinnati meant that supplies flowing through Chattanooga could support large armies pushing southeast.

The battle also demonstrated that frontal assaults uphill against entrenched defenders could sometimes succeed if the defending force was demoralized or poorly positioned. Military officers studied the Battle of Chattanooga extensively during the postwar decades. The ridge itself became important enough that the National Park Service established the Chickamauga and Chattanooga National Military Park in 1890, making it one of the first federal battlefields preserved as a memorial.

Visiting The Battlefield Sites Today

Missionary Ridge now includes a walking trail with markers explaining unit positions and troop movements. Point Park sits atop Lookout Mountain and provides views of both ridges and the Tennessee River gorge below. The Chattanooga History Center and Hunter Museum hold artifacts and documents from the siege period. The National Park Service operates a visitor center on Missionary Ridge where staff can answer specific questions about the campaign's tactical details.

If you plan a visit focused on understanding the November 1863 campaign specifically, set aside time for both Missionary Ridge and Point Park on separate visits, as each requires at least one to two hours to walk the terrain. The ridges remain steep enough that comfortable walking shoes are essential.

Related Questions

Where can I learn more details about the siege before the November battle? The Chattanooga History Center on East M.L. King Boulevard and the Hunter Museum of American Art both hold Civil War period documents and photographs showing conditions during the two-month blockade.

Why did Confederate General Bragg remain in position even after losing Lookout Mountain? Bragg hoped his fortified line on Missionary Ridge would hold, but the ridge's height created a targeting disadvantage when defending against uphill attacks, a mistake that contributed directly to the November 25 collapse.