Battle of Churubusco
Most of the battalion were killed in the Battle of Churubusco; about 100 were captured by the U.S., and roughly half of the "San Patricios" were tried and were hanged as deserters following their capture at Churubusco in August 1847. The leader, John Riley, was branded. A bust of John Riley and a plaque on the façade of a building in Plaza San Jacinto, San Angel commemorates the place where they were hanged.