 Complete the following phrase:  The original regiment was founded by Argentine national hero José de San Martín in 1812. Its first military action was the Battle of San Lorenzo 1813. The regiment also played a key role as part of the Army of the Andes Ejército de los Andes in the battles of Chacabuco 1817 and Maipú 1818 in Chile. Traveling to Perú, Ecuador, and Bolivia, the Grenadiers took part in the Battles of Riobamba, Pichincha 1822 and 