 Although their leaders' names have escaped us, the Andalusian Berber rebel army was organized into three columns – one to take Toledo (the main garrison city of the central march), another to aim for Córdoba (the Umayyad capital), and the third to take Algeciras, where the rebels hoped to seize the Andalusian fleet to ferry additional Berber troops from North Africa.With the frontier garrisons in the northwest suddenly evacuated, the Christian king Alfonso I of Asturias could hardly believe his luck, and set about dispatching Asturian troops to seize the empty forts.With remarkable swiftness and ease the northwest was captured, and the banks of the upper Ebro were raided by Alfonso and permanently lost to al-Andalus.