Battle of Perryville order of battle: Union

The following Union Army units and commanders fought in the Battle of Perryville of the American Civil War. Order of battle compiled from the army organization during the battle and return of casualties. The Confederate order of battle is listed separately.

Military rank

 * MG = Major General
 * BG = Brigadier General
 * Col = Colonel
 * Ltc = Lieutenant Colonel
 * Maj = Major
 * Cpt = Captain
 * Lt = 1st Lieutenant
 * 2Lt = 2nd Lieutenant
 * Sgt = Sergeant
 * Bvt = Brevet

Artillery

 * 10-pdr Par = 10-pounder Parrott rifle
 * 12-pdr How = M1841 12-pounder howitzer
 * 12-pdr Mtn = M1841 mountain howitzer
 * 12-pdr Nap = M1857 12-pounder Napoleon
 * 24-pdr How = M1841 24-pounder howitzer
 * 3" R      = 3-inch Ordnance rifle
 * 6-pdr SB  = M1841 6-pounder field gun
 * Jam R     = James rifle
 * How       = howitzer
 * pdr       = pound (projectile weight)
 * R         = rifled gun
 * SB        = smoothbore gun

Other

 * w = wounded
 * mw = mortally wounded
 * k = killed
 * c = captured
 * m = missing

Army of the Ohio
55,000 men, 147 guns (k-889, w-2966, m-433 = 4,288)

MG Don Carlos Buell, Commanding

MG George Henry Thomas, second in command

Escort:
 * Anderson Troop, Pennsylvania Cavalry: 2Lt Thomas S. Maple
 * 4th US Cavalry (Companies B, C, D, G, I, & K): Ltc James Oakes

Signal detachment: Cpt Jesse Merrill

I Corps
13,000 men, 38 guns (k-695, w-2290, m-346 = 3,331)

MG Alexander McDowell McCook


 * Chief of Staff: Ltc James Vote Bomford (w)

II Corps
20,000 men, 65 guns (k-2, w-4, m-6 = 12)

MG Thomas Leonidas Crittenden

Escort:
 * 1st Michigan Engineers & Mechanics (Companies B, E, I, & K): Col William Power Innes
 * 1st Ohio Cavalry (4 companies): Maj James Laughlin
 * 3rd Ohio Cavalry (4 companies): Maj John Howard Foster

III Corps
22,000 men, 44 guns (k-192, w-672, m-80 = 944)

MG Charles Champion Gilbert