Battle of Maipú Battle of Maipú The Battle of Maipú () was a battle fought near Santiago, Chile on April 5, 1818 between South American rebels and Spanish royalists, during the Chilean War of Independence. The Patriot rebels led by Argentine general José de San Martín effectively destroyed the Spanish forces commanded by General Mariano Osorio, and completed the independence of the core area of Chile from Spanish domination. In 1817, the Argentine General José de San Martín led an army across the Andes and defeated the Spanish at the battles of Chacabuco and Chalchuapa and captured Santiago. The Spanish viceroyalty sent a
Republic of Texas the Isthmus of Panama (including Texas) sought independence in the Mexican War of Independence. Many Americans fought on the side of Mexico against Spain in filibustering expeditions. One of these, the Gutiérrez–Magee Expedition (also known as the Republican Army of the North) consisted of a group of about 130 Americans under the leadership of Bernardo Gutiérrez de Lara. Gutierrez de Lara initiated Mexico's secession from Spain with efforts contributed by Magee. Bolstered by new recruits, and led by Samuel Kemper (who succeeded Magee after his death in battle in 1813), the expedition gained a series of victories against soldiers led