American Civil War: Battle of Wauhatchie: Forces under Union General Ulysses S. Grant repel a Confederate attack led by General James Longstreet in one of the few night battles of the war, protecting the Union's recently opened supply line into Chattanooga, Tennessee.

The American Civil War was a civil war in the United States between the Union and the Confederacy, which was formed in 1861 by states that had seceded from the Union. The central conflict leading to war was a dispute over whether slavery should be permitted to expand into the western territories, leading to more slave states, or be prohibited from doing so, which many believed would place slavery on a course of ultimate extinction.

The Battle of Wauhatchie was fought October 28–29, 1863, in Hamilton and Marion counties, Tennessee, and Dade County, Georgia, in the American Civil War. A Union force had seized Brown's Ferry on the Tennessee River, opening a supply line to the Union army in Chattanooga. Confederate forces attempted to dislodge the Union force defending the ferry and again close this supply line but were defeated. Wauhatchie was one of the few night battles of the Civil War.

The Union was the central government of the United States during the American Civil War. Its civilian and military forces resisted the Confederacy's attempt to secede following the election of Abraham Lincoln as president of the United States. Lincoln's administration asserted the permanency of the federal government and the continuity of the United States Constitution.

Ulysses S. Grant was the 18th president of the United States, serving from 1869 to 1877. In 1865, as commanding general, Grant led the Union Army to victory in the American Civil War.