https://en.wikipedia.org/wiki/Battle_of_Las_Navas_de_Tolosa
Muhammad al-Nasir crossed the Strait of Gibraltar with a powerful army, invaded Christian territory, and captured Salvatierra Castle, the stronghold of the knights of the Order of Calatrava. The threat to the Hispanic Christian kingdoms was so great that Pope Innocent III called Christian knights to a crusade.
The Christian forces of King Alfonso VIII of Castile were joined by the armies of his rivals, Sancho VII of Navarre and Peter II of Aragon, in battle against the Almohad Muslim rulers of the southern half of the Iberian Peninsula.
They attacked, fighting against one another, hand-to-hand, with lances, swords, and battle-axes; there was no room for archers. The Christians pressed on.
The crushing defeat of the Almohads significantly hastened their decline both in the Iberian Peninsula and in the Maghreb a decade later. That gave further impulse to the Christian Reconquest and sharply reduced the already declining power of the Moors in Iberia.