Saint Patrick's Battalion

Saint Patrick's Battalion

Infobox Military Unit
unit_name= Saint Patrick's Battalion

caption=Reproduction of the Batallón de San Patricio's flag, as described by John Riley
dates= 1846 - 1848
branch=Mexican Army
type= Artillery/Infantry
size= est. 700+ maximum strength
colonel_of_the_regiment= Francisco R. Moreno
nickname= "Los San Patricios", "Los Colorados Valientes"
patron= Saint Patrick
motto= "Erin go bragh" (Irish: Ireland forever. Lit: Ireland Until the Day of Judgement)
colors= Turkish Blue , Sky Blue , Crimson and Yellow Ref_label|A|a|1
battles= Mexican-American war * Battle of Monterrey * Battle of Buena Vista * Battle of Cerro Gordo * Battle of Churubusco * Battle of Mexico City
notable_commanders=Brevet Major John RileyRef_label|B|b|1 Captain Santiago O'Leary
The Saint Patrick's Battalion (Spanish:"Batallón de San Patricio)" was a unit of several hundred immigrants and expatriates of European descent and fought as part of the Mexican Army against the United States in the Mexican-American War of daterange|1846|1848. Many of the battalion's members deserted or defected from the U.S. Army. Primarily made up of Irish and German immigrants, the battalion also included Canadians, English, French, Italians, Poles, Scots, Spaniards, native Mexicans and Swiss, mainly Roman Catholics. [Miller(1989, pp. 188-192)] Disenfranchised Americans were also in the ranks, including, remarkably, African Americans who were, prior to joining the battalion, slaves to American Southerners.Callaghan(1995)] Coming from many different national and ethnic backgrounds, all members of the battalion were granted Mexican citizenship upon entering Mexican service — none of the members, except for the few Americans, had ever been U.S. citizens.

U.S. regiments members of the battalion are known to have deserted from include the 1st Artillery, the 2nd Artillery, the 3rd Artillery, the 4th Artillery, the 2nd Dragoons, the 2nd Infantry, the 3rd Infantry, the 4th Infantry, the 5th Infantry, the
6th Infantry, the 7th Infantry, and the 8th Infantry. [Hopkins(1913, pp. 283-284)]

The battalion served as artillery for much of the war, and despite later being formally designated as infantry, it still retained artillery pieces throughout the conflict. In many ways the battalion acted as the sole Mexican counter-balance to the U.S. innovation of "flying artillery".

Historical perspective

For Americans of the generation who fought the Mexican-American War, the "San Patricios" were considered traitors. [Hogan(1998, pp. 223)] For Mexicans of that generation, and generations to come, the San Patricios were heroes who came to the aid of fellow Catholics in need. [Mexican president Vicente Fox Quesada — "the affinities between Ireland and Mexico go back to the first years of our nation, when our country fought to preserve its national sovereignty... Then, a brave group of Irish soldiers... in a heroic gesture, decided to fight against the foreign ground invasion" Connaughton(2005)] [Mexican president Ernesto Zedillo — "members of the St. Patrick's Battalion were executed for following their consciences. They were martyred for adhering to the highest ideals ... we honor their memory. In the name of the people of Mexico, I salute today the people of Ireland and express my eternal gratitude." Fogarty(2005)] The great majority of these men were recent Irish diaspora from northeastern US ports, escaping extremely poor economic conditions in Ireland, which at the time was part of the United Kingdom of Great Britain and Ireland. In this respect, it is consequent that throughout the Saint Patrick's battalion's active years the Irish Potato Famine was taking place. Irishmen and other immigrants were often recruited directly into military service shortly or sometimes immediately on arrival. Others were conscripted on their way south by General Zachary Taylor, ["I recollect at this place [the battle of Churubusco] that some of the gunners who had stood their ground, were deserters from General Taylor's army on the Rio Grande." Personal memoirs of Ulysses S. Grant, Volume I, Chapter XI, pp. 145] with promises of salaries and land after the war..

Many theories exist on motivations for desertion, including cultural alienation, [Mermann-Jozwiak(2001, pp. 150)] mistreatment of immigrant conscripts by other nativist soldiers and senior officers, [Ballentine(1860, pp. 34-35, 281-282)] not being allowed to attend Sunday Mass or to practice their religion freely, the incentive of land in Mexico (starting at 320 acresDowney(1955)] ) and witnessing the conduct of U.S. troops following battle victories.

One school of thought is that based on the evidence of the number of Irish Catholics in the Battalion, the letters of Riley, and the field entries of senior officers the primary motivations seem to have been shared religion and sympathy for the Mexican cause, likely based on similarities between the situations in Mexico and Ireland. [Lloyd(2000, pp. 104)] [Hogan(1998 pp. 152)] Another is that the members of the Saint Patrick's Battalion were malcontents who weren't happy with their lot, switching sides for higher wages and land grants. [McCornack(1958, pp. 255)] Relevant historical considerations include Irish expatriates' long tradition of serving in Catholic countries' military forces dating back to the Flight of the Wild Geese in the 17th century, and more recent history detailing of the role played by Irish soldiers in South American wars of independence.ref_label|C|c|none

The flag

There are many conflicting accounts of what the flag of the Saint Patrick's Battalion actually looked like, further confused by the fact that no actual flags, or depictions of them, are known to have survived to the present day. The only version of the flag known to have survived the war was subsequently lost or stolen from the chapel at West Point. [Hogan(1998, pp. 228)]

John Riley himself mentioned in a brief missive, regarding the appearance of the flag:

According to an American journalist covering the war with Mexico:Two other eye-witness accounts of the flag exist, both from American soldiers. The first describes it as:The second only mentioning:Another radically different version of the flag, as described in this Mexican source:Whatever the case, a reproduction military flag was created by the Clifden and Connemara Heritage Group in 1997, and another the following year for the MGM film "One Man's Hero". The film was a romanticised version of the San Patricios' history. A third version embodying the description of the San Luis Potosí flag was produced by the Irish Society of Chicago and hangs in Chicago's Union League Club.

ervice as a military unit

Formation and early engagements

Present in the Mexican army for the battles of Palo Alto and Resaca de la Palma were the "Legión de Extranjeros" (Legion of Foreigners); the men who would later make up the core of the Saint Patrick's battalion. Meanwhile, John Riley and "a company of 48 Irishmen" [Stevens(1999, pp. 291)] manned Mexican artillery at the Siege of Fort Texas, which took place concurrently to the two other battles.

The Saint Patrick's Battalion first fought as a recognised Mexican unit in the Battle of Monterrey on 21 September 1846 as an artillery battery. Popularly they were called "Los Colorados" by the Mexicans because of their ruddy, sun burnt complexions and red hair color.Wallace(1950, pp. 85)] [Bauer(1992, pp.42)] They were commanded by John Riley,Ref_label|B|b|2 an Irish artilleryman and veteran Non-commissioned officer of the British Army, who possibly arrived in Canada in 1843 whilst serving in the British Army (the assertion that he served as a Sergent in the 66th (Berkshire) Regiment of Foot, is known to be a fabrication [Miller(1989, pp. 27)] ) going on to join the U.S. Army in Michigan in September 1845. Considered a competent soldier, Riley was to be promoted to the rank of lieutenant shortly before his decision to desert. This did not affect his decision, and he deserted in Matamoros in April 1846. [Hogan(1998, pp. 41)] Upon meeting Mexican forces he was initially given the Officers rank of Lieutenant by General Pedro de Ampudia.Hopkins(1913, pp. 280)] At the battle of Monterrey, the San Patricios proved their artillery skills by mowing down many American soldiers, and they are credited with defeating twoHowes(2003 pp. 181)] to three separate assaults into the heart of the city. Among their targets were companies led by such officers as Braxton Bragg, many of whose soldiers would end up in their own ranks later in the war. [Stevens(1999, pp. 150, 172-173)] Their tenacity, however, did not affect the Mexican commanders decision to capitulate and abandon the position.
Following the engagement at Monterrey, the San Patricios grew in number, by some estimates reaching an enlistment of over 700 men. [Chamberlain(1856, pp.226)] The U.S. army's conduct at the previous battle, which had included firing on civilians taking refuge in Catholic churches, resulted in more desertions from the U.S. army. Notices were sent out encouraging foreign and particularly Catholic U.S. troops to desert the army and nation that had no respect for them or their religion. Not all the new recruits were deserters, but also European Catholics already residing in Mexico. Forces re-assembled at San Luis Potosí and they had their distinct Green silk flag embroidered there.

Buena Vista

They then marched northwards after joining a larger force commanded by Antonio López de Santa Anna sent from Mexico City — the "liberating army of the North". At the Battle of Buena Vista (known as the battle of Angostura in Mexico) in Coahuila on 23 February, the Patricios became engaged with US forces. They were assigned the three heaviest — 18 and 24 pound — cannons the Mexican army possessed, which were positioned on high ground over-looking the battlefield. They were later described as "a strong Mexican dint of extraordinary exertions... [that] commanded the entire plateau" [Smith(1919a, pp. 391)]
They started the battle supporting Mexican infantry by firing on U.S. lines as the Mexicans advanced on them, then later decimating an artillery battery directly opposite them on the battlefield; Washington’s 4th artillery, D company. A small number of San Patricios were dispatched with a division commanded by Manuel Lombardini with the express purpose of capturing the 4th's cannons once the crews had been dealt with. As the division got close enough they charged the artillery battery, bayoneting whoever remained and routing the rest leaving the attached San Patricios free to haul away two six pound cannons. [Stevens(1999, pp. 195)] These cannons would later be used by Mexican forces at the Battle of Contreras. In frustration, the U.S. commander Zachary Taylor, referring to the Saint Patrick's Battalion, ordered a squadron of the 1st Dragoons to "take that damned battery". [Stevens(1999, pp. 193)] In this task they failed to succeed, and badly blooded were forced to retreat. At about 1pm the San Patricios covered a Mexican retreat as a disordered mass of infantry sought refuge during a lull in the fighting. [Smith(1919a, pp. 393)] The San Patricios rode out the day in a costly artillery duel with several American batteries, [Smith(1919a, pp. 395)] which claimed the lives and injured roughly one third of their number.Fogarty(2005)] Several Irishmen were awarded the War Cross by the Mexican government for their conduct in that battle, and many received field promotions.

Re-organisation and final battles

Despite their excellent performance in a number of engagements as artillery, the much-reduced San Patricios were ordered to muster a larger infantry battalion in mid-1847 by personal order of Santa Anna, which was re-named the "The Foreign Legion of Patricios" consisting of many other European volunteers, commanded by Colonel Francisco R. Moreno, with Riley in charge of 1st company and Santiago O'Leary heading up the second.

As an infantry unit, the San Patricios continued to serve with distinction. Knowing that they were likely to face the death penalty if captured, the San Patricios are known to have threatened wavering Mexican troops with death by "friendly fire" at the Battle of Cerro Gordo, if they retreated. When the San Patricios were too heavily engaged to carry out their threat, the Mexican troops broke and ran, leaving the San Patricios as they fought U.S. troops in hand to hand combat. Fact|date=September 2007

The Battle of Churubusco (20 August 1847) took place shortly after the debacle at Cerro Gordo being only two days later. General Santa Anna gave a verbal order to "preserve the point at all risk".Ramsey(1850, pp. 283)] The San Patricio Companies initially met the attackers outside the walls of the convent at a tête-de-pont, which was about 500 yards from a fortified convent. [Ramsey(1850, pp. 284)] A battery of threeSmith(1919b, pp. 111)] to five [Ramsey(1850, pp. 284)] heavy cannons were used from this position to hold off the American advance along with support from "Los Independencia Batallón" and "Los Bravos Batallón". Several U.S. charges towards the bridgehead were thrown off, [Smith(1919b, pp. 115)] with the San Patricio companies serving as an example to the supporting battalions. [Smith(1919b, pp. 114)] Unlike the San Patricios who mostly consisted of hardened veterans(many having served in the militaries of the United Kingdom and assorted German States, as well as the militaries of various other nations before the Mexican-American war) the supporting Mexican battalions were simply militia(the term National Guard is also used) who up until this point had been untested by battle.

A lack of ammunition started to cause the Mexican soldiers in the trenches between the bridgehead and the convent to disband, with it having been exhasted and leaving them with no effective means of fighting back. [Ramsey(1850, pp. 286)] To make matters worse Santa Anna had ordered half of these soldiers to a different part of the battle-field. [Smith (1919b, pp. 116)] When the requested ammunition wagon finally arrived, the 9 ½ drachm cartridges were compatible with none but the San Patricio Companies "Brown Bess" rifles, with them only making up a faction of the defending forces. [Ramsey(1850, pp. 295)] Further hampering Mexican efforts, a stray spark from an artillery piece firing grape shot at the on-coming U.S. troops caused the just arrived ammunition to explode and set fire to several men, including Captain O'Leary and General Anaya. [Ramsey(1850, pp. 296)] A withdrawal behind the walls of the "convento de Churubusco" was called when due to these factors the threat of being outflanked proved too great.

The San Patricios that had defected from the U.S. army used this battle as a chance to settle old scores, and it was noted that "The large number of officers killed in the affair was...ascribed to them, as for the gratification of their revenge they aimed at no other objects during the engagement".Ballentine(1860, pp. 256)] Though hopelessly outnumbered and underequipped the defenders repelled the attacking U.S. forces from the parapets with heavy losses until their ammunition ran out, and a Mexican officer raised the white flag of surrender. Officer Patrick Dalton of the San Patricios tore the white flag down, prompting General Pedro Anaya to order his men to fight on with their bare hands if necessary. American Private Ballantine reported that when the Mexicans attempted to raise the white flag a further two more times, members of the San Patricios shot and killed them. [Meltzer(1974, pp. 197)] Finally after brutal close-quarters fighting with bayonets and sabers through the halls and rooms inside the convent, U.S. army Captain James M. Smith suggested a surrender after raising his white handkerchief.Nordstrom(2008)] Following the U.S. victory the Americans "ventilat [ed] their vocabulary of Saxon expletives, not very "courteously," on Riley and his beautiful disciples of St. Patrick". [Ramsey(1850, pp. 299)]

General Anaya states in his written battle report that 35 San Patricios were killed, 85 taken prisoner (including a wounded John Riley, Captain O'Leary, and Anaya himself having been captured) and about 85 more escaped with retreating Mexican forces. They were reformed before the Battle of Mexico City some two weeks later and remained stationed at Querétaro, made up of the uncaptured survivors of the battle of Churubusco and a roughly equal number of fresh deserters from the U.S. army. [Stevens(1999, pp.286)] Following the war the battalion never regained its former numbers and was officially mustered out of Mexican military service in 1848, either because of members alleged involvement in an abortive military coup [Stevens(1999, pp. 290-291)] or budget cuts. [cite web|url=|title=The United States in Latin America: A Historical Dictionary, S, pp. 311|publisher= [] |date=|accessdate=02 August|accessyear=2008]



The San Patricios captured by the U.S. Army suffered the punishment of traitors; they had been responsible for some of the toughest fighting (and the heaviest casualties) that the U.S. Army had faced, and 72 were immediately charged with desertion by the Army.

Two separate courts-martial were held, one at Tacubaya on 23 August, and another at San Ángel on 26 August. At neither of these trials were the men represented by lawyers nor were transcripts taken of the proceedings. Neither was required by law.Fact|date=July 2008 This lack of formal legal advice could account for the fact that several of the men claimed that drunkenness had led them to desert (a very common defense in military trials at the time that sometimes led to lighter sentences), and others described how they were forced to join the Mexican army in some form or another. The vast majority of the San Patricios either offered no defense or their defenses were not recorded. In any case, the law required death as one punishment for the crime of desertion during a time of war. [ [ Article 85—Desertion ] ]


One soldier who claimed he was forced to fight by the Mexicans after he was captured by them, and who subsequently refused to do so was sentenced to death by firing squad instead of hanging, along with another who was found to have never officially joined the Mexican army.

The fate that awaited most of the captured San Patricios was death by hanging, thirty from the Tacubaya trial and eighteen from San Ángel. The rationale for this was that they had entered Mexican military service following the declaration of war. This was in violation of the Articles of War for the time which clearly stipulated that the penalty for desertion and/or defecting to the enemy during a time of war was death by firing squad, regardless of the circumstances. Hanging was reserved only for spies (without uniform) and for "atrocities against civilians.", neither of which activities any members of the Saint Patrick's Battalion were charged with.Hogan(2006)] In fact more than 9,000 U.S. soldiers deserted during the Mexican-American War, and only the San Patricios were punished in this way. [Ex. Doc. 36,30th Cong., 1 Sess, "Report of the Secretary of War..." pp. 6-7: see also Hogan(1998,pp.19)]

Those who had left military service before the official declaration of war on Mexico (Riley among them) on the other hand were sentenced to: cquote|"receive 50 lashes on their bare backs, to be branded with the letter "D" for deserter, and to wear iron yokes around their necks for the duration of the war". [Frías(1984, pp. 173)]


En masse hangings for treason took place on 10 September 1847 at San Ángel and the village of Mixcoac, and 13 September at Chapultepec. By order of General Winfield Scott, 30 San Patricios were to be executed in full view of the two armies as they fought the Battle of Chapultepec, at the precise moment that the flag of the United States replaced the flag of Mexico atop the citadel. This order was to be carried out by Colonel William Harney, an officer who had been twice disciplined for insubordination in his career, and would later go on to be court-martialed a further two more times. While overseeing the hangings, Harney ordered Francis O'Connor hanged even though he had had both legs amputated the previous day. When the army surgeon informed the colonel that the absent soldier had lost both his legs in battle, Harney replied:

After four and a half hours the U.S. flag appeared on the flagpole at 9.30 am, the Mexican flag having been taken with cadet Juan Escutia to his death after leaping with it from Chapultepec Castle to deny the Americans the honor of capturing it. In a final act of defiance the men about to be hanged cheered the flag, as one onlooker remarked; "Hands tied, feet tied, their voices still free". [Stevens(1999, pp. 275)] At Harney's signal, the carts holding the tied and noosed men pulled away. [Hogan(1998, pp. 287)] Harney’s further violations of the Articles of War requiring prompt execution did not result in charges being brought against him. He was subsequently promoted to Brigadier General, a post which he held while the US Army occupied Mexico City. The Mexican government described the manner of the hangings as “a cruel death or horrible torments, improper in a civilised age, and [ironic] for a people who aspire to the title of illustrious and humane”, and by a writer covering the war as "a refinement of cruelty and...fiendish". [Fast(1993)]


Those who survived the war generally disappeared from history. A handful are on record as having made use of the land claims promised them by the Mexican government. But even today, they are honored and revered as heroes in Mexico. [Gonzales(2000, pp. 86-87)]

The "Batallón de San Patricio" is memorialised on two separate days; the first on 12 September, the generally accepted anniversary of the executions, and the other on Saint Patrick's Day. The San Patricios are also remembered with many schools, churches and other landmarks taking their name. The street in front of the Irish School, in suburban Monterrey, is named "Batallón de San Patricio" ("Battalion of Saint Patrick"). Down south, the street in front of the Santa María de Churubusco convent in Mexico City was named "Mártires Irlandeses" ("the Irish martyrs"). The battalion's name is written in gold letters in the chamber of Mexico's House of Representatives. [cite web|url=|title=Bagpipers honor Irish who fought for Mexico|publisher=USA Today|date=|accessdate=10 July|accessyear=2008]

In the United States, remembrance of the battalion has historically been different. It was the U.S. army's policy to deny the existence of the Saint Patrick's battalion as a cover-up, only ended in 1915 with an inquiry initiated by U.S. congressmen William Henry Coleman and Frank L. Greene. This resulted in the U.S. army admitting that it been dishonest regarding their knowledge on the matter, and with a congressional ruling ordering the army to turn over its records on the battalion to the national archives. [Stevens(1999, pp. 300-301)] Irish Americans have in the past sought to distance themselves from the battalion.

In 1997, President Ernesto Zedillo commemorated the 150th anniversary of the execution of the San Patricios at a ceremony in Mexico City's San Jacinto Plaza, where the first twenty hangings were staged. Both the Republic of Ireland and Mexico jointly issued commemorative postage stamps to mark this anniversary.

In 2004, at an official ceremony attended by numerous international dignitaries, including directors Lance and Jason Hool, as well as several actors from the film "One Man's Hero", a statue was donated by the Mexican government to the Irish government in perpetual thanks for the bravery, honor and sacrifice of the St. Patrick's Battalion. The statue also stands at Clifden's town center.

In recent times the impact of the Saint Patrick's Battalion's legacy has been diverse; it has served as the inspiration for the title of soccer team club Deportivo Chivas USA's supporters association, was evoked in a Saint Patrick's Day message from Subcomandante Marcos of the Zapatista Army of National Liberation, [cite web|url=|title=Struggle in Mexico: the Irish Connection||date=|accessdate=09 July|accessyear=2008] and, due to its cosmopolitan nature, has been remembered as a symbol of international solidarity with Mexico. [cite web|url=|title=Students seek to have expulsion order annulled|publisher=Mexican Labor News and Analysis, Vol 7, No. 5|date=June 2002|accessdate=13 July|accessyear=2008] ["Al conmemorar la gesta heroica del Batallón de San Patricio honramos la memoria de todos los hombres y de todas las mujeres que han luchado y siguen luchando por construir un mundo más justo, más incluyente y más democrático, independientemente de su origen étnico, su condición social, su herencia cultural y su filosofía de vida." (As we commemorate the heroic gesture of the St. Patrick's Battalion, we honor the memory of all men and all women who have fought and are still struggling to build a world more just, more democratic and inclusive, regardless of their ethnic origin, social status, cultural heritage and philosophy of life)cite web|url=|title=CL Aniversario del batallón de San patriciosp icon|publisher= [] |accessdate=07 August|accessyear=2008] In honor of John Riley, the Mexican flag flies on September 12 in the town center of Riley's native Clifden, County Galway. There is also a monument dedicated to the battalion there.


* [ St Patrick's Battalion] — by David Rovics
* [ San Patricio Brigade] — by Black 47
* [ The San Patricios] — by [ The Fenians]
*San Patricios — by Street Dogs(State of Grace (album))
* [ San Patricios] — by Ollin(song and E.P.)
*"Pa Los Del San Patricio" — by Charlie O'Brien
*The Men That God Made Mad — by Niamh Parsons with Graham Dunne
*San Patricios- by The Plankrunners

Films and Fiction

*1962 — " [ Saint Patrick's Battalion] " by Carl Krueger
*1996 — " [ The San Patricios] " Directed by Mark R. Day. [ Review by William H. Mulligan] , and reply by Mark R. Day.
*1997 — "In the Rogue Blood" by James Carlos Blake
*1999 — "One Man's Hero" Directed by Lance Hool, Written by Milton S. Gelman
*1999 — "St Patrick's Battalion" Directed by Jason Hool
*2001 — "Gone for Soldiers" by Jeff Shaara
*2006 — "Saint Patrick's Battalion" by James Alexander Thom

See also

* Niños Héroes
* Battles of the Mexican-American War
* Irish Migration Studies in Latin America
* Irish Brigade (French)
* Irish Brigade (US)
* Connolly Column


a. Note_label|A|a|1The coats were turkish-blue with yellow lapels and crimson-red cuffs as well as piping. The trousers were sky-blue with red piping. Officers wore black or blue Kepis and privates wore dark-blue cloth barracks caps, with red tassels similar to a Fez, also with red piping. [Miller(1989, pp. 38 & pp. 71)] [Stevens(1999, pp. 231)]

b. Note_label|B|b|1Note_label|B|b|2Variably spelled in English as Jon Reily, Riely, Reilly, O'Reily and O'Reilly. His name is given as Juan Reyle, Reley, Reely and Reiley in Mexican army documents written in Spainsh. Regardless of other variant spellings, the name was Seán O' Raghailligh in the original Irish Gaelic. [Miller(1989, pp. 26)] [Stevens(1999, pp.293)]

c. Note_label|C|c|noneSee articles 1st Venezuelan Rifles, Bernardo O'Higgins, Daniel Florencio O'Leary, Juan O'Donojú, Morgan O'Connell, & William Lamport.

d. Note_label|D|d|noneMonterrey is here misspelled "Monterey" as it appears in the Personal Memoirs of Ulysses S. Grant. Not to be confused with Monterey of the Battle of Monterey, also in the Mexican-American war.



Primary Sources

*Ballentine, George. [ "Adventures of an English Soldier in the United States Army"] , New York: W. A. Townsend & Company, 1860
*Grant, Ulysses S. [,M1 "Personal memoirs of Ulysses S. Grant"] , Volume I, 1885
*Ramsey, Albert C. [ The other side; or, Notes for the history of the war between Mexico and the United States] , New York: John Wiley, 161 Broadway and 13 Paternoster Row, London, 1850
*Chamberlain, Samuel. "My Confession: Recollections of a Rogue", New York: Harper and Brothers, 1853

econdary Sources

*Bauer, K. Jack. "The Mexican War, 1846-48", Bison Books, 1992 ISBN 0803261071
*Callaghan, James. cite web|url=|title="The San Patricios"|publisher=American Heritage Magazine|date=Volume 46, Issue 7, November 1995|accessdate=03 August|accessyear=2008
*Connaughton, Michael G. cite web|url=|title="Beneath an Emerald Green Flag: The Story of Irish Soldiers in Mexico"|publisher=The Society for Irish Latin American Studies|date=September, 2005|accessdate=13 July|accessyear=2008
*Cress, Lawrence Delbert & Wilkins, George. "Dispatches from the Mexican-American War", University of Oklahoma Press, 1999 ISBN 0806131217
*Downey, Fairfax. cite web|url=|title="Tragic Story of the San Patricio Batallion"|publisher=American Heritage Magazine|date=Volume 6, Issue 4, June 1955|accessdate=10 July|accessyear=2008
*Fogarty, James. cite web|url=|title="The St. Patricio Battalion: The Irish Soldiers of Mexico"|publisher=The Society for Irish Latin American Studies|date=September, 2005|accessdate=03 August|accessyear=2008
*Frías, Heriberto. "La guerra contra los gringos" Mexico City: Ediciones Leega/Jucar, 1984 ISBN 968495011X sp icon
*Gonzales, Manuel G. "Mexicanos: A history of Mexicans in the United States", Indiana University Press, 2000 ISBN 0-253-33520-5
*Hogan, Michael. "Irish Soldiers of Mexico", Guadalajara: Fondo Editorial Universitario, 1998 ISBN 978-9687846002
*_________. citeweb|url=|title="Los San Patricios: The Irish Soldiers of Mexico"|publisher=Indymedia|date=September 2006|accessdate=15 July|accessyear=2008
*Hopkins, G. T., "The San Patricio Battalion in the Mexican War", Cavalry Journal 24, September 1913
*Fast, Howard cite web|url=|title="Inglorious Tale from the Mexican War"|publisher=|date=February, 1993|accessdate=10 July|accessyear=2008
*Howes, Kelly King. "Mexican American war", U·X·L, 2003 ISBN 0787665371
*Lloyd, David. "Ireland After History", University of Notre Dame Press, 2000 ISBN 0268012180
*McCornack, Richard. "The San Patricio Deserters in the Mexican War, 1847", The Irish Sword. Volume 3, 1958
*Mermann-Jozwiak, Elisabeth. cite web|url=|title="An interview with Montserrat Fontes"|publisher=MELUS, Vol. 26, No. 3, Confronting Exiles (Autumn, 2001), pp. 145-161|date=September 22, 2001|accessdate=10 July|accessyear=2008
*Miller, Robert Ryal. "Shamrock and Sword, The Saint Patrick's Battalion in the US-Mexican War", Norman, Oklahoma; University of Okiahoma Press, 1989 ISBN 0806129646
*Meltzer, Milton. "Bound for the Rio Grande; the Mexican Struggle, 1845-1850", New York: Knopf, 1974 ISBN 0394824407
*Nordstrom, Pat. cite web|url=|title=San Patricio Battalion|publisher=Handbook of Texas( [ online] )|date=Last Updated: January 18, 2008 |accessdate=07 August|accessyear=2008
*Wallace, Edward S. "The Battalion of Saint Patrick in the Mexican War", Military Affairs, Vol. 14, No. 2 (Summer, 1950), pp. 84-91
*Wunn, Dennis J. "San Patricio Soldiers: Mexico's Foreign Legion", Texas Western Pr 1985 ISBN 0874041503
*Smith, Justin H. [ "The War with Mexico", vol 1] , The Macmillan Company, 1919
*_________. [ "The War with Mexico", vol 2] , The Macmillan Company, 1919
*Stevens, Peter F. "The Rogue's March: John Riley and the St. Patrick's Battalion", Washington, DC: Brassey's, 1999 ISBN 1574887386


Note that unlike the aforementioned material, the titles in these bibliographies have not been used as sources(except for duplicates given both here and there).
* Murray, Edmundo. [ "The San Patricio Battalion: A Bibliography"] at "Irish Migration Studies in Latin America", 2006.
* [ A working biblogray on the Mexican-American war] , including a San Patricio battalion section at [] refend

External links

* [ Batallón de San Patricio: the Irish Heroes of Mexico, Mexican studies site]
* [ Dr Michael Hogan]
* [ The San Patricios: Mexico's Fighting Irish]

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