American Civil War: The two-day Second Battle of Corinth ends in a Union victory, with General William Rosecrans protecting the critical rail junction of Corinth, Mississippi from Confederate forces under General Earl Van Dorn.

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 Second Battle of Corinth was fought October 3–4, 1862, in Corinth, Mississippi. For the second time in the Iuka–Corinth Campaign, Union Maj. Gen. William Rosecrans defeated a Confederate army, this time one under Maj. Gen. Earl Van Dorn.

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.

William Starke Rosecrans was an American inventor, coal-oil company executive, diplomat, politician, and U.S. Army officer. He gained fame for his role as a Union general during the American Civil War. He was the victor at prominent battles in the Western theater of the American Civil War. However, his military career ended after his disastrous defeat at the Battle of Chickamauga in 1863.

Corinth is a city in and the county seat of Alcorn County, Mississippi, United States. The population was 14,622 at the 2020 census. Its ZIP codes are 38834 and 38835. It lies on the state line with Tennessee.