1212. The Battle of Las Navas de Tolosa
Plot: On 16 July 1212, a Crusader army made up of Castilians, Aragonese and Navarrese (but also French, English and Germans) confronted the army of the Almohad Caliph an-Nasir at the foot of the Sierra Morena mountain range. The Battle of Las Navas de Tolosa, as the battle is known, is considered the most important battle of the Middle Ages on the Iberian Peninsula and is a key event in the history of Spain