Finally, in 1212, through the mediation of Pope Innocent III, a crusade was called against the Almohads. Castilians under Alfonso, Aragonese and Catalans under Peter II, Navarrese under Sancho VII, and Franks under the archbishop of Narbonne, Arnaud Amalric, all flocked to the effort. The military orders also lent their support. Calatrava first, then Alarcos, and finally Benavente were captured before a final battle was fought at Las Navas de Tolosa near Santa Elena on 16 July. The caliph Muhammad al-Nasir was routed and Almohad power broken.