Subjectwise, the poem is a narrative of three of El Cid's victories: over an unknown
Navarrese champion, over count
García Ordóñez de Cabra, and finally over the
Berenguer Ramon II, Count of Barcelona. The poem begins conventionally, with the poet confessing his unworthiness to sing of such a hero as El Cid, and moves quickly through his subject's youth, his early triumph over the champion from Navarre, and his loyal service to
Sancho II of Castile and
Alfonso VI of León. The anonymous poet blames the Cid's subsequent exile from court on certain enemies who turn the king against him. But the Cid is victorious over the army of García Ordóñez that Alfonso sent against him. The poet then describes, in great detail, a description of the Cid arming himself for battle against the Count of Barcelona—the
battle of Almenar (1082). The poem ends abruptly, obviously incomplete, before the battle. The description of the Cid's weapons, the earliest in the literature, contains references to
chainmail, a silver-plated
helm with a golden gem on it, a
lance, an anonymous sword with golden ornamentation (which may be
Tizona, based on the description), and a
shield depicting a "fierce shining golden dragon" (which is the only surviving description of the Cid's shield). The
Carmen also contains the earliest description of the Cid's ancestry, describing him as
Nobiliori de genere ortus / Quod in Castello non est illo maius: "He sprung from a more noble family, there is none older than it in Castile."
R. A. Fletcher suggests this is a discreet way of saying that the Cid's ancestors were not among the most noble, just nobler than some. ==Date and authorship==