The National Civil War Museum, located at One Lincoln Circle at Reservoir Park in Harrisburg, Pennsylvania, is a permanent, nonprofit educational institution created to promote the preservation of material culture and sources of information that are directly relevant to the American Civil War of 1861–1865, and the aftermath period of the war as related to Civil War Veterans' service organizations, including the Grand Army of the Republic, United Confederate Veterans and the Daughters of the Confederacy to 1920. The museum also serves as the National Headquarters for the Sons of Union Veterans of the Civil War (SUVCW), the legal successor to the Grand Army of the Republic (GAR). In 2009, the museum became affiliated with the Smithsonian Institution in Washington, D.C.

Former Harrisburg Mayor Steve Reed, a Civil War enthusiast, was behind the museum's development, which cost 32 million dollars. It is now privately owned, and has an association with the Smithsonian Institution. Recently, the Museum published a book about the Union General Josh Chamberlin, one of many planned books the museum hopes to publish.

Former Harrisburg Mayor Steve Reed, a Civil War enthusiast, was behind the museum's development, which cost 32 million dollars. It is now privately owned, and has an association with the Smithsonian Institution. Recently, the Museum published a book about the Union General Josh Chamberlin, one of many planned books the museum hopes to publish.