Battle of Atlanta order of battle: Union

The following Union Army units and commanders fought in the Battle of Atlanta (July 22, 1864) of the American Civil War. The Confederate order of battle is listed separately.

Division	Brigade	Regiments and others
First Division BG Charles R. Woods	1st Brigade Col Milo Smith	26th Iowa 30th Iowa 76th Ohio
	2nd Brigade Col James A. Williamson	4th Iowa 9th Iowa 25th Iowa 31st Iowa
	3rd Brigade Col Hugo A. von Wangelin (w)	3rd Missouri 12th Missouri 17th Missouri 31st Missouri 32nd Missouri
	Artillery Maj Clemens Landgraeber	Battery F, 2nd Missouri Light Artillery 4th Battery, Ohio Light Artillery
Second Division BG Morgan L. Smith BG Joseph A. J. Lightburn	1st Brigade Col James S. Martin	55th Illinois 111th Illinois 116th Illinois 6th Missouri 8th Missouri
	2nd Brigade BG Joseph Lightburn Col Wells S. Jones	83rd Indiana 30th Ohio 37th Ohio 47th Ohio 53rd Ohio 54th Ohio
	Artillery Cpt Francis DeGress	Battery A, 1st Illinois Light Artillery Battery B, 1st Illinois Light Artillery Battery H, 1st Illinois Light Artillery
Fourth Division BG William Harrow	1st Brigade Col Reuben Williams	26th Illinois 90th Illinois 100th Illinois 12th Indiana
	2nd Brigade Col Charles C. Walcutt	40th Illinois 103rd Illinois 97th Indiana 6th Iowa 46th Ohio
	3rd Brigade Col John M. Oliver	48th Illinois 99th Indiana 15th Michigan 70th Ohio
	Artillery Cpt Henry H. Griffiths	Battery F, 1st Illinois Light Artillery 1st Battery, Iowa Light Artillery

Division	Brigade	Regiments and others
Second Division BG Thomas W. Sweeny	1st Brigade BG Elliott W. Rice	52nd Illinois 66th Indiana 2nd Iowa 7th Iowa
	2nd Brigade Col August Mersey (w) Ltc Robert N. Adams	9th Illinois (Mounted) 12th Illinois 66th Illinois 81st Ohio
	3rd Brigade BG William Vandever (garrison duty at Rome)	7th Illinois^[1] 50th Illinois 57th Illinois 39th Iowa
	Artillery Cpt Frederick Welker	Battery H, 1st Missouri Light Artillery
Fourth Division BG John W. Fuller	1st Brigade Col John Morrill	64th Illinois 18th Missouri 27th Ohio 39th Ohio
	2nd Brigade Col John W. Sprague (engaged at Decatur)	35th New Jersey 43rd Ohio 63rd Ohio 25th Wisconsin
	Artillery Cpt Jerome B. Burrows	Battery C, 1st Michigan Light Artillery Battery F, 2nd U.S. Light Artillery

Division	Brigade	Regiments and others
Third Division BG Mortimer D. Leggett	1st Brigade BG Manning F. Force (w) Col George E. Bryant	20th Illinois 30th Illinois 31st Illinois 12th Wisconsin 16th Wisconsin
	2nd Brigade Col Robert K. Scott (w) Ltc Greenbury F. Wiles	20th Ohio 68th Ohio 78th Ohio
	3rd Brigade Col Adam G. Malloy	17th Wisconsin Worden's Battalion Detachment, 14th Wisconsin Detachment, 81st Illinois Detachment, 95th Illinois
	Artillery Cpt William S. Williams	Battery D, 1st Illinois Light Artillery Battery H, 1st Michigan Light Artillery 3rd Battery, Ohio Light Artillery
Fourth Division BG Giles A. Smith	1st Brigade Col Benjamin F. Potts	32nd Illinois 23rd Indiana 53rd Indiana 3rd Iowa 32nd Ohio
	2nd Brigade Col John A. Logan (on garrison duty in northern Georgia)	14th Illinois^[2] 15th Illinois 41st Illinois
	3rd Brigade Col William Hall	11th Iowa 13th Iowa 15th Iowa 16th Iowa
	Artillery Cpt Edward Spear	Battery F, 2nd Illinois Light Artillery 1st Battery, Minnesota Light Artillery 15th Battery, Ohio Light Artillery

Abbreviations used