12th Illinois Infantry

This unit attached to Col. August Mersy's 2nd Brigade of Brig. Gen. Grenville M. Dodge's 2nd Division, Maj. Gen. Richard J. Oglesby's Left Wing, XVI Army Corps, District of Corinth, stationed at Pocahontas, TN and commanded by Maj. James R. Hugunis & Col. Augustus L. Chetlain.