The Order of Calatrava was the first military order founded in Spain, created in 1158 to hold a frontier fortress that the Templars had judged indefensible. Cistercian in spirit and Castilian in loyalty, it was nearly destroyed at Alarcos, redeemed at Las Navas de Tolosa, and became the mother-order of Alcántara, Aviz, and Montesa.
Calatrava was the first of the Spanish military orders and the model for the rest. Born to defend a frontier fortress the Templars had abandoned, it fused the discipline of the Cistercians with the mission of holy war, and became a pillar of the Castilian Reconquista.
Its history swings between two battles: the disaster of Alarcos, which nearly ended it, and the triumph of Las Navas de Tolosa, which restored it. From Calatrava sprang a whole family of orders.
In 1158 the frontier fortress of Calatrava, guarding the road to Toledo, was thought so exposed that the Templars holding it surrendered it back to the king. The abbot Raymond of Fitero and the knight Diego Velázquez offered to defend it with a new brotherhood of Cistercian warrior-monks.
King Sancho III granted them the castle, and the Order of Calatrava was born — the first military order native to Spain, confirmed by the pope in 1164 and tied to the Cistercian abbey of Morimond.
The order’s darkest hour came at the Battle of Alarcos in 1195, when the Almohads shattered the Castilian army and overran Calatrava itself; the brothers were driven north and the order nearly collapsed.
Redemption came at the Battle of Las Navas de Tolosa in 1212, where Calatrava’s knights fought in the great Christian victory that broke Almohad power. Soon after, the order built a new headquarters, Calatrava la Nueva, deeper toward the frontier.
Calatrava’s Cistercian model spread. The Leonese Order of San Julián del Pereiro, which became Alcántara, and the Portuguese Order of Évora, which became Aviz, were affiliated to it, and Calatrava kept rights of visitation over them.
When the Templars were suppressed, the new Order of Montesa in Valencia was likewise placed under Calatrava’s oversight. Through these daughter-orders Calatrava’s rule shaped military monasticism across Iberia.
Like Santiago, Calatrava’s mastership became a prize in Castile’s politics, held by magnates such as Pedro Girón and his son. The last master, García López de Padilla, saw the crown steadily take control.
In 1487 Ferdinand the Catholic assumed the administration of the order, and in 1523 the mastership was permanently annexed to the Spanish crown.
Calatrava left the template for the Spanish military orders and a chain of fortress-monasteries across New Castile. Its ruined headquarters, Calatrava la Nueva, still crowns its hill as one of the great monuments of the Reconquista.
As the parent of Alcántara, Aviz, and Montesa, it stands at the head of a whole Iberian family of military orders.