The Saint Patrick’s Battalion ( Batallón de San Patricio )
The Saint Patrick’s Battalion (Spanish: Batallón de San Patricio) was a unit of several hundred Irish, Germans, Swiss, Scots and other Roman Catholics of European descent, who deserted the U.S. Army and fought as part of the Mexican Army against the United States in the Mexican-American War of 1846 to 1848. Duration : 0:5:36