The story of the legendary San Patricios battalion and their legacy as told in film, books and song from bands as diverse as The Chieftains, Black 47, David Rovics, Larkin, The Fenians, The Wakes and others.
by Michael Hogan
Next week sees the release of the debut album from Mexican Celtic-Punk band Batallón de San Patricio. Now not only does this show the truly international appeal of the scene these days but it also gives us an opportunity to look into one of the least-known stories of the Irish who came to America in the 1840’s, that of the Irish battalion that fought on the Mexican side in the America-Mexico War of 1846-1848. They came to Mexico and died, some gloriously in combat, others ignominiously on the gallows. United under a green banner, they participated in all the major battles of the war and were cited for bravery by General López de Santa Anna, the Mexican commander-in-chief and president.
At the penultimate battle of the war, these Irishmen fought until their ammunition was exhausted and even then tore down the white flag that was raised by their Mexican comrades in arms, preferring to struggle on with bayonets until finally being overwhelmed. Despite their brave resistance, however, 85 of the Irish battalion were captured and sentenced to bizarre tortures and deaths at the hands of the Americans, resulting in what is considered even today as the “largest hanging affair in North America.”

Hanging of the San Patricios as painted by Sam Chamberlain.
In the spring of 1846, the United States was poised to invade Mexico, its neighbour to the south. The ostensible reason was to collect on past-due loans and indemnities. The real reason was to provide the United States with control of the ports of San Francisco and San Diego, the trade route through the New Mexico Territory, and the rich mineral resources of the Nevada Territory – all of which at that time belonged to the Republic of Mexico. The United States had previously offered $5 million to purchase the New Mexico Territory and $25 million for California, but Mexico had refused.
Before the declaration of war by the United States, a group of Irish Catholics headed by a crack artilleryman named John Riley deserted from the American forces and joined the Mexicans. Born in Clifden, County Galway, Riley was an expert on artillery, and it was widely believed that he had served in the British army as an officer or a non-com in Canada before enlisting in the American army. Riley’s turned this new unit into a crack artillery arm of the Mexican defence. He is credited with changing the name of the group from the Legion of Foreigners and designing their distinctive flag. Within a year, the ranks of Riley’s men would be swelled by Catholic foreign residents in Mexico City, and Irish and German Catholics who deserted once the war broke out, into a battalion known as Los San Patricios, or ‘Those of Saint Patrick’.
The San Patricios fought under a green silk flag emblazoned with the Mexican coat of arms, an image of St. Patrick, and the words “Erin Go Bragh.” The battalion was made up of artillery and was observed in key positions during every major battle. Their aid was critical because the Mexicans had poor cannon with a range of 400 meters less than the Americans. In addition, Mexican cannoneers were inexperienced and poorly trained. The addition of veteran gunners to the Mexican side would result in at least two major battles being fought to a draw. Several Irishmen were awarded the Cross of Honor by the Mexican government for their bravery, and many received field promotions.
At the Battle of Churubusco, holed up in a Catholic monastery and surrounded by a superior force of American cavalry, artillery, and infantry, the San Patricios withstood three major assaults and inflicted heavy losses on the Yanks. Eventually, however, a shell struck their stored gunpowder, the ammunition park blew up, and the Irishmen, after a gallant counteroffensive with bayonets, were overwhelmed by sheer numbers. They were tried by a military court-martial and then scourged, branded, and hanged in a manner so brutal that it is still remembered in Mexico today.
(left: the Batallón de San Patricio Memorial plaque placed at the San Jacinto Plaza in the district of San Ángel, Mexico City in 1959: “In memory of the Irish soldiers of the heroic St. Patrick’s Battalion, martyrs who gave their lives to the Mexican cause in the United States’ unjust invasion of 1847”)
In September 1847, the Americans put the Irish soldiers captured at the Battle of Churubusco on trial. Forty-eight were sentenced to death by hanging. Those who had deserted before the declaration of war were sentenced to whipping at the stake, branding, and hard labour. Fuelled by Manifest Destiny, the American government dictated terms to the Mexicans in the Treaty of Guadalupe Hidalgo in 1848. More than two-thirds of the Mexican Territory was taken, and out of it the United States would carve California, Nevada, New Mexico, Arizona, Utah, Wyoming, and parts of Kansas and Colorado. Among all the major wars fought by the United States, the Mexican War is the least discussed in the classroom, the least written about, and the least known by the general public. Yet, it added more to the national treasury and to the land mass of the United States than all other wars combined.
After the conflict, so much new area was opened up, so many things had been accomplished, that a mood of self-congregation and enthusiasm took root in the United States. The deserters from the war were soon forgotten as they homesteaded and laboured in the gold fields of California or, as the 1860’s approached, put on the grey uniform of the Confederacy or the blue of the Union. Prejudice against the Irish waned, as the country was provided with a “pressure valve” to release many of its new immigrants westward. The story of the San Patricios disappeared from history.
For most Mexicans, solidarity with the Irish is part of a long tradition and they remembered the help they received from the Irish and their friendship. In the words of John Riley, written in 1847 but equally true today,
“A more hospitable and friendly people than the Mexican there exists not on the face of the earth… especially to an Irishman and a Catholic.”
Riley sums up what cannot be clearly documented in any history: the basic, gut-level affinity the Irishman had then, and still has today, for Mexico and its people. The decisions of the men who joined the San Patricios were probably not well-planned or thought out. They were impulsive and emotional, like many of Ireland’s own rebellions – including the Easter Uprising of 1916. Nevertheless, the courage of the San Patricios, their loyalty to their new cause, and their unquestioned bravery forged an indelible seal of honour on their sacrifice.
In 1997, on the 150th anniversary of the executions, then Mexican president Ernesto Zedillo stated:
“Members of the St. Patrick’s Battalion were executed for following their consciences. They were martyred for adhering to the highest ideals…we honour their memory. In the name of the people of Mexico, I salute today the people of Ireland and express my eternal gratitude”.
***
This article first featured on the Latino Rebels web-site here. Michael Hogan is the author of 20 books, including the Irish Soldiers of Mexico, one of the major historical works on the San Patricios Battalion which encompasses six years of research in the U.S., Mexico, and Ireland. As a permanent resident of Mexico, he was the first historian to be granted complete access to Mexican archives and military records. His home page is www.drmichaelhogan.com and the Facebook page for the book and related videos, photos, maps and stories about the San Patricios can be found at www.facebook.com/IrishMex.
The little-known 1999 feature film One Man’s Hero tells the (again!) little-known story of the San Patricios. The plot centres around the story of John Riley, as played by Tom Berenger, who commands the battalion, as he bravely leads his men in battle, and struggles with authorities on both sides of the border.
Country: Spain / Mexico / USA Language: English / Spanish Release Date: 8 October 1999
Stars: Tom Berenger, Joaquim de Almeida, Daniela Romo
Despite being a decent film and an mostly enjoyable couple of hours parts of the film are pure blarney so for an accurate account of the San Patricios, read The Rogue’s March by Peter Stevens, and watch the San Patricios documentary starting here in several parts.
As we said at the beginning Celtic-Punk is no longer just confined to the Irish and Celtic diaspora it has become truly international with bands represented on every continent of the globe. In the next few days though we will be reviewing our very first band from Mexico, Batallón de San Patricio. Their debut album takes influences from both Ireland and their home country to make something truly wonderful as well as unique. I hope you revisit these pages to check them and their album out. You can subscribe to the London Celtic Punks Blog by filling in the ‘Follow Blog’ box that will be either on the left or below depending on how you are viewing us. Cheers!
Tagged: Batallón de San Patricio, Black 47, Damien Dempsey, David Rovics, Larkin, The Chieftains, The Wakes
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