American Civil War: Union troops under Quincy A. Gillmore capture Fort Wagner in Morris Island after a seven-week siege.

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.

Quincy Adams Gillmore was an American civil engineer, author, and a general in the Union Army during the American Civil War. He was noted for his actions in the Union victory at Fort Pulaski, where his modern rifled artillery readily pounded the fort's exterior stone walls, an action that essentially rendered stone fortifications obsolete. He earned an international reputation as an organizer of siege operations and helped revolutionize the use of naval gunnery.

Fort Wagner or Battery Wagner was a beachhead fortification on Morris Island, South Carolina, that covered the southern approach to Charleston Harbor. Named for deceased Lt. Col. Thomas M. Wagner, it was the site of two American Civil War battles in the campaign known as Operations Against the Defenses of Charleston in 1863, in which United States forces took heavy casualties while trying to seize the fort. The Union Army's second assault on Fort Wagner, the Second Battle of Fort Wagner, included African American soldiers from the 54th Massachusetts Infantry Regiment and 3rd United States Colored Infantry Regiment. Josiah T. Walls, who went on to become a United States Congressman from Florida, was one of the soldiers.

Morris Island is an 840-acre (3.4 km²) uninhabited island in Charleston Harbor in South Carolina, accessible only by boat. The island lies in the outer reaches of the harbor and was thus a strategic location in the American Civil War. The island is part of the cities of Charleston and Folly Beach, in Charleston County.