elite Moorish cavalry, the "Volunteers of the Faith", led by Uthman ibn Abi al-Ula, exited from Granada and started harassing the retreating Castilians of infante John. These minor attacks turned into a general assault when the Granadines realized the Castilians were losing their cohesion during their retreat and were unable to fight back effectively. Infante John requested the aid of infante Peter, but Peter, according to chroniclers, was at first dissuaded from this by his companions. When he finally decided to help his uncle, he fell from his horse as he led his men, and was trampled and killed. At this point the vanguard thought only of flight and to reach the Castilian border; in their panic, many men drowned while attempting to cross the river Genil in full armour. The unsupported rearguard collapsed, with infante John falling victim probably to stroke or heat stroke leading to a spectacular Moorish victory. Most of the fighting took place in the present-day municipality of Pinos Puente. A hill on the battlefield was given the name Cerro de los Infantes ("Hill of the Infantes"). Aftermath Numbers are not available for the Castilian losses but they had to be quite large. The border for some years after 1319 was undermanned and the Granadines could raid the southern Castilian territories almost at will. Maria de Molina remained as sole regent and was later joined by her other son, infante Philip and by a distant relative, the celebrated Juan Manuel. In 1325 Alfonso XI started to rule alone and soon started his lifelong, and in the end victorious, struggle with the Nasrid kingdom and its later ally, the Marinids of Fez, which was also intended to avenge the 1319 defeat. References External links Bibliography A rich bibliography is available in the Spanish Wikipedia Vega of Granada Vega of Granada Vega of Granada 14th century in Al-Andalus Vega of Granada Vega of Granada 1319 in Europe 14th century in Castile