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                     Union Army of the Ohio
              Battle of Perryville or Chaplin Hills
                         8 October 1862 

Commanding Officer: Major General Don Carlos Buell

Escort:
               Anderson Troop/Pennsylvania Cavalry Regiment
               B/,C/,D/,G/,I/,K/4th U.S. Cavalry Regiment

Signal Corps: Captain J. Merrill

Unattached:
               A/,D/,F/,I/7th Pennsylvania Cavalry Regiment

I Army Corps: Major General Alexander McD. McCook
     3rd Division: Major General Lovell H. Rousseau
          9th Brigade: Colonel L.A.Harris
               38th Indiana Infantry Regiment
               2nd Ohio Infantry Regiment
               33rd Ohio Infantry Regiment
               94th Ohio Infantry Regiment
               10th Wisconsin Infantry Regiment
               Indiana Light Artillery, 5th Battery
          17th Brigade: Colonel W.H.Lytle
               42nd Indiana Infantry Regiment
               88th Indiana Infantry Regiment
               15th Kentucky Infantry Regiment
               3rd Ohio Infantry Regiment
               10th Ohio Infantry Regiment
          28th Brigade: Colonel J.C.Starkweather
               24th Illinois Infantry Regiment
               79th Pennsylvania Infantry Regiment
               1st Wisconsin Infantry Regiment
               21st Wisconsin Infantry Regiment
               Indiana Light Artillery, 4th Battery
               Kentucky Light Artillery, Battery A
          Unattached:
               2nd Kentucky Cavalry Regiment (6 cos)
               A/,C/,H/1st Michigan Engineers 
                    & Mechanics Regiment
     10th Division: Brigadier General J.S.Jackson
          33rd Brigade: Brigadier General W.R.Terrill
               80th Illinois Infantry Regiment
               123rd Illinois Infantry Regiment
               101st Indiana Infantry Regiment
               Garrard's Detachment
                    Det/7th Kentucky Infantry Regiment
                    Det/32nd Kentucky Infantry Regiment
               105th Ohio Infantry Regiment
               Parson's Battery
          34th Brigade: Colonel G.Webster
               80th Indiana Infantry Regiment
               50th Ohio Infantry Regiment
               98th Ohio Infantry Regiment
               121st Ohio Infantry Regiment
               Indiana Light Artillery, 19th Battery

II Army Corps: Major General Thomas L. Crittenden
(Note - only two units (marked *) of the II Corps appear to  have 
engaged in the battle.)
     4th Division: Brigadier General Wm. S. Smith
          10th Brigade: Colonel Wm. Grose
               84th Illinois Infantry Regiment
               26th Indiana Infantry Regiment
               23rd Kentucky Infantry Regiment
               6th Ohio Infantry Regiment
               24th Ohio Infantry Regiment
               4th U.S. Artillery, Battery H
               4th U.S. Artillery, Battery M
          19th Brigade: Colonel Wm. B. Hazen
               l10th Illinois Infantry Regiment
               9th Indiana Infantry Regiment
               6th Kentucky Infantry Regiment
               27th Kentucky Infantry Regiment
               41st Ohio Infantry Regiment
               1st Ohio Light Artillery, Battery F
          22nd Brigade: Brigadier General C. Cruft
               31st Indiana Infantry Regiment
               1st Kentucky Infantry Regiment
               2nd Kentucky Infantry Regiment
               20th Kentucky Infantry Regiment
               90th Ohio Infantry Regiment
               1st Ohio Light Artillery, Battery B
          Cavalry Brigade: 
               2nd Kentucky Cavalry Regiment (4 cos)
     5th Division: Brigadier General H.P.Van Cleve
          11th Brigade: Brigadier General
               79th Indiana Infantry Regiment
               9th Kentucky Infantry Regiment
               13th Kentucky Infantry Regiment
               19th Ohio Infantry Regiment
               59th Ohio Infantry Regiment
          14th Brigade: Colonel P.B.Hawkins
               44th Indiana Infantry Regiment
               86th Indiana Infantry Regiment
               11th Kentucky Infantry Regiment
               26th Kentucky Infantry Regiment
               13th Ohio Infantry Regiment
          23rd Brigade: Colonel S. Matthews
               35th Indiana Infantry Regiment
               8th Kentucky Infantry Regiment
               21st Kentucky Infantry Regiment
               51st Ohio Infantry Regiment
               99th Ohio Infantry Regiment
          Artillery:
               Indiana Light Artillery, 7th Battery 
               Pennsylvania Light Artillery, Battery B
               Wisconsin Light Artillery, 3rd Battery 
     6th Division: Brigadier General Thomas J. Wood
          15th Brigade: Brigadier General M.S. Hascall
               100th Illinois Infantry Regiment
               17th Indiana Infantry Regiment
               58th Indiana Infantry Regiment
               3rd Kentucky Infantry Regiment
               26th Ohio Infantry Regiment
               Indiana Light Artillery, 8th Battery 
          20th Brigade: Colonel C.G.Harker
               51st Indiana Infantry Regiment
               73rd Indiana Infantry Regiment
               13th Michigan Infantry Regiment
               64th Ohio Infantry Regiment
               65th Ohio Infantry Regiment
               Ohio Light Artillery, 6th Battery 
          21st Brigade: Colonel G.d.Wagner
               15th Indiana Infantry Regiment
               40th Indiana Infantry Regiment*
               57th Indiana Infantry Regiment
               24th Kentucky Infantry Regiment
               97th Ohio Infantry Regiment
               Indiana Light Artillery, 10th Battery *
          Unattached:
               B/, E/, I/, K/1st Michigan Engineers and Mechanics
               Det/1st Ohio Cavalry Regiment
III Army Corps: Major Generals Charles C. Gilbert
     1st Division: Brigadier General Albin Schoepf
          1st Brigade: Colonel M.B.Walker
               82nd Indiana Infantry Regiment
               12th Kentucky Infantry Regiment
               17th Ohio Infantry Regiment
               31st Ohio Infantry Regiment
               38th Ohio Infantry Regiment
          2nd Brigade: Brigadier General S.S.Fry
               10th Indiana Infantry Regiment
               74th Indiana Infantry Regiment
               4th Kentucky Infantry Regiment
               10th Kentucky Infantry Regiment
               14th Ohio Infantry Regiment
          3rd Brigade: Brigadier General J.B.Steedman
               87th Indiana Infantry Regiment
               2nd Minnesota Infantry Regiment
               9th Ohio Infantry Regiment
               35th Ohio Infantry Regiment
               18th U.S.Infantry Regiment
          Artillery:
               Michigan Light Artillery, 4th Battery 
               Ohio Light Artillery, Battery C
               4th U.S. Artillery, Battery I
          Cavalry:
               Det/1st Ohio Cavalry Regiment
     9th Division: Brigadier General Robert B. Mitchell
          13th Brigade: Colonel M. Gooding               
               59th Illinois Infantry Regiment
               74th Illinois Infantry Regiment
               75th Illinois Infantry Regiment
               22nd Indiana Infantry Regiment
               Wisconsin Light Artillery, 5th Battery 
          31st Brigade: Colonel Wm. P.Carlin
               21st Illinois Infantry Regiment
               38th Illinois Infantry Regiment
               101st Ohio Infantry Regiment
               15th Wisconsin Infantry Regiment
               Minnesota Light Artillery, 2nd Battery 
          32nd Brigade: Colonel Wm. W. Caldwell
               25th Illinois Infantry Regiment
               35th Illinois Infantry Regiment
               81st Indiana Infantry Regiment
               8th Kansas Infantry Regiment
               Wisconsin Light Artillery, 8th Battery 
          Cavalry :
               B/36th Illinois Cavalry Regiment
     11th Division: Brigadier General P.H.Sheridan
          35th Brigade: Lt Colonel. B.Laibolt
               44th Illinois Infantry Regiment
               73rd Illinois Infantry Regiment
               2nd Missouri Infantry Regiment
               15th Missouri Infantry Regiment
          36th Brigade: Colonel D.McCook
               85th Illinois Infantry Regiment
               86th Illinois Infantry Regiment
               125th Illinois Infantry Regiment
               52nd Ohio Infantry Regiment
          37th Brigade: Colonel N.Greusel
               36th Illinois Infantry Regiment
               88th Illinois Infantry Regiment
               21st Michigan Infantry Regiment
               24th Wisconsin Infantry Regiment
          Artillery: 
               2nd Illinois Light Artillery, Battery I
               1st Missouri Light Artillery, Battery G
     Cavalry Division: 
          3rd Brigade: Captain E.Gay
               9th Kentucky Cavalry Regiment
               2nd Michigan Cavalry Regiment
               9th Pennsylvania Cavalry Regiment




U.S.  War Department,  The War of the Rebellion, 
A Compilation of Official Records of the Union and 
Confederate Armies,  Government Printing Office; 
Washington, D.C., 1882

Source: George Nafziger Order of Battle Collection