Having concentrated, the combined Allied force began marching north towards Medina-Sidonia on 28February, and la Peña now ordered Beguines's irregulars to join them at Casas Viejas.
After another night march, on 5 March the Allies reached a hill to the south east of Barrosa, the Cerro del Puerco (also referred to as the Barrosa Ridge).