General Military Operations, chapters 8-10 from E.B. Quiner's Military History of Wisconsin (Chicago, 1866)

              ARMY   ORGANIZATION. 347
The Eleventh and Twelfth Army corps, which had been brought from the Army of the Potomac by General Hooker, were consol¬ idated into the Twentieth Corps, and placed under command of General Hooker. The several departments in the District of Mississippi, under General Sherman, were organized for the sum¬ mer campaign as follows: The Department of the Cumberland, under General Thomas, consisted of the Fourth Army Corps, General Howard, Fourteenth Army Corps, General Palmer, and Twentieth Army Corps, General Hooker. The Department of the Tennessee, under General AlcPherson, consisted of the Fif¬ teenth Army Corps, General Logan, Sixteenth Army Corps, General Dodge, and Seventeenth Army Coq:)s, General Blair. This last did not join the Army of General Sherman till about the 1st of June. The Department of the Ohio consisted of the Twenty-third Corps, under General Schofield.
The AVisconsin regiments were severally located in the Army Corps as follows: Dei)artment of the Cumberland, Fourth Corps, Fifteenth and Twenty-fourth Infantry; Fourteenth Corps, Eirst, Tenth, and Twenty-first Infantry, and Fifth Bat¬ tery; Twentieth Corps, Third, Twenty-second, Twenty-sixth, and Thirt^'-fii-st Infantry. In Department of the Tennessee, Sixteenth Corps, Twenty-fifih and Thirty-second Infantry; Seventeenth Corps, Twelfth, Sixteenth, and Seventeenth Infantry. The Eighth AVisconsin Batteiy was attached to Kilpatrick's division of cav¬ alry, and the First Cavalry was in AlcCook's division of cavalry. The Thirteenth Regiment was attached to the First Brigade, Fourth Division, Twentieth Army Corps, but was detached on railroad guard duty. The Eighteenth was attached to the De¬ partment of the Cumberland, but took no part in the Atlanta campaign, being occupied in guarding railroads in Alabama, and subsequently at Allatoona, Georgia. The Third Battery, and Battery C, Heavy Artillery, were stationed at Chattanooga, and the Sixth Battery was stationed successively atlluiitsville, Kings¬ ton, and on the Etowah River, near Cartersville. The Twelfth AVisconsin Battery was stationed, successively, at Huntsville, Kingston, and Allatoona.
General Grant notified General Sherman that he should move from his camp, round Culpepper, on the 5th of Alay, and requested General Sherman to begin his forward movement on Atlanta at