El Cid and his relationships with Christians and Banu Hud in Andalusia

Since the commencement of the first century, after hijrah, it was developed the political-military relationship between satraps of Andalusia and Spanish governments. Meanwhile, Banu Hud government made an intimate relationship with Christian governments due to the proximity of their territory with that of Christians in Spain as well as the occurrence of battles among families so that this relationship led to a more military cooperation of Banu Hud with Castile. Consequently, the distinguished military commander of Castile, Rodrigo Diaz better known as El Cid Campeador, moved towards the Banu Hud’s court and could take a role in the military and political organization of Banu Hud by warfare and frequent achievements. Relying on the historical sources and new researches, the present article reviews the military and political life of Rodrigo Diaz in Sancho and Castile government as well as the way of his dominance in the era of Banu Hud, moreover it concludes that in spite of unsparing supports of Banu Hud governors, he violated his contract and obeyed Alfonso, the authoritative ruler of Castile, and pursued the development of an independent government in the east of Andalusia subsequent to taking the highest governmental positions