During the Mexican War the regiment fought in most of the major battles of the war including
Palo Alto, Monterey, the invasion and Siege of Vera Cruz, Cerro Gordo, Churubusco and Chapultepec which led to the capture and occupation of Mexico City.<unk> Palo Alto, Monterey, the invasion and Siege of Vera Cruz, Cerro Gordo, Churubusco and Chapultepec which led to the capture and occupation of Mexico City.