Editing El Cid (section)

===Service under Sancho II===
As a young man in 1057, El Cid fought against the Moorish stronghold of [[Taifa of Zaragoza|Zaragoza]], making its [[emir]] [[Ahmad al-Muqtadir|al-Muqtadir]] a vassal of Sancho. In the spring of 1063, El Cid fought in the [[Battle of Graus]], where Ferdinand's half-brother, [[Ramiro I of Aragon]], was laying siege to the Moorish town of Graus, which was fought on Zaragozan lands in the valley of the [[Cinca (Spain)|river Cinca]]. Al-Muqtadir, accompanied by Castilian troops including El Cid, fought against the Aragonese. The party slew Ramiro I, setting the Aragonese army on the run, and emerged victorious. One legend has said that during the conflict, El Cid killed an Aragonese knight in single combat, thereby receiving the honorific title "''Campeador''".<ref>{{Citation |last=Weiss |first=Julian |title='El Cid' (Rodrigo Díaz de Vivar) |date=2018-12-31 |url=https://www.cambridge.org/core/product/identifier/9781108672832%23CN-bp-12/type/book_part |work=The Cambridge Companion to the Literature of the Crusades |pages=184–199 |editor-last=Bale |editor-first=Anthony |edition=1 |publisher=Cambridge University Press |doi=10.1017/9781108672832.013 |isbn=978-1-108-67283-2 |s2cid=165471019 |access-date=2022-11-12}}</ref>

When Ferdinand died, Sancho continued to enlarge his territory, conquering both Christian strongholds and the [[Moorish]] cities of [[Zamora, Spain|Zamora]] and [[Badajoz]]. When Sancho learned that Alfonso was planning on overthrowing him in order to gain his territory, Sancho sent Cid to bring Alfonso back so that Sancho could speak to him.{{Citation needed|date=April 2022}}