Battle of Márquez Bridge
The Battle of Márquez Bridge (located on the border between current-day Villa Udaondo and Paso del Rey, Buenos Aires Province, Argentina), fought on 26 April 1829, during the civil war between Unitarians and Federalists, resulting in a victory for the Federal Party forces of Juan Manuel de Rosas and the governor of Santa Fe Province, Estanislao López, over general Juan Lavalle, who had usurped the office of Governor of Buenos Aires Province.After the fall of the Bernardino Rivadavia administration, the leader of the Federalist Party, Colonel Manuel Dorrego, was elected governor of Buenos Aires Province.Rosas, Buenos Aires Province chief of the army, marched to Santa Fe Province, where he joined with Santa Fe governor Estanislao López starting to march on Buenos Aires, to avenge the crime and depose the Unitarian government.They then continued the retreat towards today's La Matanza Partido, while López established camp in Luján and Rosas in Cañuelas.Rosas established a siege of Lavalle at the city of Buenos Aires, closing access and leaving him without supplies from the countryside.