The 'Unidentified Soldier in Union Sergeant's Uniform with Company M Forage Cap (U.S. Civil War)' is an antique artifact that represents a soldier from the Union Army during the American Civil War. This item includes a sergeant's uniform and a forage cap from Company M, which is associated with a specific infantry unit within the Union Army. The lack of identification suggests that the artifact does not reveal the name or identity of the individual who originally wore it. This historical relic provides an important connection to the era, offering insight into the appearance and equipment used by Union soldiers during the Civil War. Its authenticity and rarity make it a valuable collectible for history enthusiasts and collectors.