The Battle of Simancas, (also called Alhandega or al-Khandaq) begins between the Kingdom of León and the Caliphate of Córdoba. The battle lasted some days, with the allied Christian troops emerging victorious and routing the Cordovan forces; resulting in a victory for León and the decline of the Caliphate's power in the region. ibn Muhammad al-Tawil, wali of Huesca, withheld his troops from the battle. He was hunted down near Calatayud by Salama ibn Ahmad ibn Salama, taken to Córdoba, and crucified in front of its Al-Qasr.
Fondo Antiguo de la Biblioteca de la Universidad de Sevilla from Sevilla, España, CC BY 2.0 , via Wikimedia Commons