3rd Missouri Infantry - Union
This unit was attached to Col. Charles R. Woods' 2d Brigade, of Maj. Gen'ls Frederick Steele's and Brig. Gen. John M. Thayer's 1st Division, of Maj. Gen'ls William T. Sherman's and Frederick Steele's XV Army Corps, and commanded by Lt. Col. Theodore Meumann.
At Chickasaw Bayou (26 Dec 1862 - 2 Jan 1863) the regiment was attached to Brig. Gen. Charles E. Hovey's 2d Brigade, of Brig. Gen. Frederick Steele's 4th Division, Maj. Gen. William T. Sherman's Expeditionary Force, and commanded by Col. Isaac F. Shepard . [Refer to Edwin Bearss' The Vicksburg Campaign, Volume I, page 227.]