Battle of Cerro Gordo order of battle

The following units and commanders of the U.S. and Mexican armed forces fought in the battle of Cerro Gordo from April 17–18, 1847 during the Mexican–American War. The U.S. 1st Division and 1st Brigade, 3rd Division remained in the rear at Veracruz.

United States

Army of Invasion: MG Winfield Scott
Headquarters

Acting Inspector General: Lt. Colonel Ethan Allen Hitchock
Chief of Engineers: Major John L. Smith
Chief Topographical Engineer: Major William Turnbull
Chief Quartermaster: Captain Robert Allen

Division	Brigade	Regiments and Others
2nd Division MG David E. Twiggs Asst. Adjutant General: 1st Lt. William T. H. Brooks	1st Brigade Col William S. Harney	Battalion, 1st U.S. Artillery: Major Thomas Childs * Companies B, F, G, H, and I 7th U.S. Infantry: Lt. Colonel Joseph Plympton Mounted Rifles: Major Edwin V. Sumner w Apr 17, Major William W. Loring
2nd Division MG David E. Twiggs Asst. Adjutant General: 1st Lt. William T. H. Brooks	2nd Brigade Col Bennet Riley	2nd U.S. Infantry: Captain Thompson Morris 3rd U.S. Infantry: Captain E. B. Alexander Battalion, 4th U.S. Artillery: Major John L. Gardner * Companies A, D, F, G, and H : Voltigeurs: Colonel Timothy Patrick Andrews
2nd Division MG David E. Twiggs Asst. Adjutant General: 1st Lt. William T. H. Brooks	Artillery	Light Battery K, 1st U.S.: Captain Francis Taylor * Rocket and Howitzer Battery: Major George H. Talcott
3rd "Volunteer" Division MG Robert Patterson Asst. Adjutant General: 1st Lt. William H. French	2nd Brigade BG Gideon J. Pillow w Apr 18 Colonel William B. Campbell	Independent Company of Kentucky Infantry: Captain John Stuart Williams 1st Pennsylvania Infantry: Colonel Francis M. Wynkoop 2nd Pennsylvania Infantry: Colonel William B. Roberts 1st Tennessee Infantry: Colonel William B. Campbell 2nd Tennessee Infantry: Colonel William T. Haskell
3rd "Volunteer" Division MG Robert Patterson Asst. Adjutant General: 1st Lt. William H. French	3rd Brigade BG James Shields w Apr 18 Colonel Edward D. Baker	3rd Illinois Infantry: Colonel Ferris Foreman 4th Illinois Infantry: Colonel Edward D. Baker 2nd New York Infantry: Colonel Ward B. Burnett

Mexico

Gen. div. Antonio Lopez de Santa Anna

Division	Brigade	Regiments and Others
Division of the East	Ampudia Brigade	3rd Infantry 4th Infantry 5th Infantry 11th Infantry
Division of the East	Vasquez Brigade	1st Light Infantry 2nd Light Infantry 3rd Light Infantry 4th Light Infantry
Division of the East	Juvera Cavalry Brigade	5th Cavalry 9th Cavalry Morelia Cavalry Coraceros Cavaalry
Division of the East	Rangel Brigade	6th Infantry Grenadiers of the Guard Libertad Militia Battalion Galeana Militia Battalion
Division of the East	Pinzon Brigade	Atlixco Militia Battalion Zacapoaxtla Militia Battalion Matamoros and Tepeaca Militia Battalion
Division of the East	Arteaga Brigade	Puebla Active Battalion National Guard Battalion
Division of the East	Canalizo Cavalry Division	Jalapa, Chalchicomula & Orizava Squadrons

As actually deployed

Right – Gen. L. Pinzon – 5th Infantry, Atlixco Battalion and one artillery battery
Center – Navy Capt. B. Araujo – Libertad, and Zacapoastla battalions and one artillery battery
Left – Col. Badilo – Jalapa, Coatepec and Teusitlan National Guard companies and one artillery battery
Camp of Matamoros – Gen. Jarero – Matamoros and Tepeaca Battalions and one gun

Battery on the road – Gen.br. R. Diaz de la Vega-6th Infantry, Grenaderos Battalion and one Art. Battery
el Telegrafo – Gen.br. C. Vasquez, Col. Lopez Uraga, Col R.Palacios – 3d Infantry and one artillery battery
Reserve in Camp at Cerro Gordo- Gen.div. A. Lopez de Santa Ana – 1st, 2d, 3d & 4th Light, and 4th & 11th Line. Artillery reserve, general park, hospital, baggage etc.
Cavalry at Coral Falso – Gen. V. Canalizo -Hussars Squadron, 5th & 9th Line Cavalry, Morelia & Coraceros Regiments, Jalapa, Chalchicomula and Orizava Squadrons.
Notes:

Manuel Balbontin, a Mexican artillery officer during the war does not cover the battle.
Mexican Artillery batteries usually had 4 guns. Batteries with larger guns had fewer than this. Guns were grouped together by size, i.e. a battery of 4 four pounders, or a battery of 3 twelve pounders A total of 43 guns would indicate about 11 batteries. Col. L. Palacios was killed while commanding artillery. Naval Capt P. Ruiz y Baranda, Naval Lt. F. Fernandez, and Capt. V. Arguelles and Lts. M. Camacho, B. Arnable & J. R. Cobarrubias were all captured commanding artillery. Naval Capt. Godinez and artillery officers Malagon and Olzinger were also present. Battery commanders? Naval Capt. Araujo, above was probably a battery commander also. Or, about ten battery commanders.
GMT Games posits Pinzon with 7 guns, Araujo with 8 guns, Badillo with 9 guns, Diaz with 7 guns Vasques with 4 guns, Jarero with 5 guns. Or about ten batteries.