Army of the Andes

The Army of the Andes was a military force created by the United Provinces of the Río de la Plata (Argentina) and mustered by general José de San Martín in his campaign to free Chile from the Spanish Empire. In 1817, it crossed the Andes Mountains from the Argentinian province of Cuyo (his staging point being the current-day province of Mendoza, Argentina), and succeeded in its objective by dislodging the Spanish from the country.