“A more hospitable people than the Mexicans does not exist anywhere on Earth.”
— John Riley, leader of the Saint Patrick’s Battalion
During the Mexican–American War (1846–1848), something extraordinary happened. Hundreds of Irish Catholic immigrants serving in the U.S. Army looked at the nation invading Mexico, then looked at Mexico itself, and made a choice that would cost many of them their lives.
They crossed the battle lines and fought for Mexico.
They became El Batallón de San Patricio (The Saint Patrick’s Battalion), one of the most formidable artillery units of the entire war.
Why Did They Do It?
Many of these men were survivors of the Irish Great Famine, having fled starvation only to encounter severe discrimination within the U.S. Army. Irish Catholic soldiers endured anti-Catholic prejudice, harsh punishments, and mistreatment from nativist officers.
They then encountered Mexico—a Catholic nation, like Ireland. A country defending its homeland against a powerful invading force, much as Ireland had struggled against foreign domination for centuries. A nation that welcomed them as brothers.
They made their decision.
- Several hundred Irish and other Catholic immigrants fought under the Mexican flag.
- They carried a green banner displaying the Irish harp alongside the Mexican eagle.
- At the Battle of Buena Vista, official reports praised them for fighting with exceptional courage and determination.
The Battle of Churubusco
In August 1847, at the Convent of Churubusco, the San Patricios fought until they exhausted all of their ammunition. When Mexican soldiers, overwhelmed by superior numbers, attempted to raise a white flag of surrender, members of the Saint Patrick’s Battalion tore it down. They fully understood what capture would mean for them, yet continued fighting hand-to-hand until there was no hope of victory.
The Price They Paid
Following expedited military trials conducted without legal counsel, 50 members of the Saint Patrick’s Battalion were sentenced to death. This remains the largest mass execution ever ordered by the United States military.
On September 13, 1847, the final 30 condemned soldiers stood on the gallows within sight of Chapultepec Castle. The commanding officer deliberately delayed the executions until the exact moment the American flag was raised over the castle, ensuring that the flag they had abandoned would be the last thing they saw.
Years later, Ulysses S. Grant, who had served in that war, wrote in his memoirs:
“I do not think there was ever a more wicked war than that waged by the United States on Mexico.”
Mexico Never Forgot
Every September 12, commemorative ceremonies honor the Saint Patrick’s Battalion at Plaza San Jacinto in San Ángel, where a memorial plaque bears the names of the fifty men who faced execution.
In 2002, their name was inscribed in gold letters on the Wall of Honor in Mexico’s Chamber of Deputies:
“Defenders of the Homeland 1846–1848 and the Saint Patrick’s Battalion.”
Across the Atlantic, in Clifden, Ireland—the hometown of John Riley—the Mexican flag is raised every September 12 in their memory.
Two nations. One act of conscience. Never forgotten.
The Saint Patrick’s Battalion: Forever Mexican at heart.
Source: mexicodailypost




