4th Minnesota Volunteer Infantry Regiment - National Flag
The narrow canton and pattern of the stars shows that this was issued by the Philadelphia Quartermaster Depot, a commercial manufacturer of military equipment. This color may have been one of the last ones used by the regiment during the war.
The Fourth was formed in the fall of 1861. Following brief frontier duty in Minnesota, the regiment was engaged in the strategically important Mississippi battles of Iuka (September 1862), Corinth (October 1862), and Vicksburg (July 1863). It later participated in the Battle of Chattanooga (November 1863), Shermans March to the Sea, and the drive northward into the Carolinas (November 1864 March 1865).