Perryville Union order of battle

The following Union Army units and commanders fought in the Battle of Perryville of the American Civil War. 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

 * 3" R = 3 inch caliber ordnance rifle
 * Jam = James rifle
 * How = Howitzer
 * Mtn = Mountain
 * Nap = M1857 Napoleon Gun
 * Par = Parrott rifle
 * 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