The 47th Illinois Infantry was organized at Peoria, Illinois and mustered into Federal service on August 16, 1861.[2] The unit was transferred to St. Louis, Missouri, on September 23, 1861, and remained on barracks duty until December of that year.[2]
The 47th Illinois Volunteers lost 30 killed and 100 wounded in the Battle of Corinth, Mississippi, in October 1862.[2] The unit also suffered heavy casualties in a May 22, 1863, charge during the initial phase of the Siege of Vicksburg, Mississippi.[2]
Following a discharge at Springfield, Illinois, in October 1864 there was subsequent reorganization, with the reorganized unit seeing duty in Kentucky, Tennessee, and Mississippi.[2] The regiment was finally mustered out of service on January 21, 1866.[2]
Total strength and casualties
The regiment suffered 5 officers and 58 enlisted men who were killed in action or mortally wounded and 3 officers and 184 enlisted men who died of disease, for a total of 250 fatalities.[3]
Commanders
Colonel John Bryner - resigned on September 2, 1862.
Colonel William A. Thrush - killed in action October 3, 1862.
Colonel John N. Cromwell - killed in action May 16, 1863.
Colonel John D. McClure - mustered out of service on October 11, 1864.[4]