The 11th Missouri Infantry distinguished itself as just the type of regiment the Union needed in the Civil War. Hard as nails and loyal to a fault, the men of the "Eagle Brigade" would follow their commanders "into hell if they ordered." They battled two Confederate regiments at Iuka, turned the tide at Battery Robinett at Corinth, assaulted the impossible Stockade Redan at Vicksburg as whole ranks of soldiers were cut down, and broke Hood's line at Nashville. Although the 11th Missouri ranks among the 300 top regiments of the Civil War, little of its history has been formally recorded. This study provides a detailed account of the regiment's four-and-a-half years of outstanding service and a roster.