The Crusades were a series of religious expeditionary wars blessed by the Pope and the Catholic Church, with the stated goal of restoring Christian access to the holy places in and near Jerusalem. The Crusades were originally launched in response to a call from the leaders of the Byzantine Empire for help to fight the expansion into Anatolia of Muslim Seljuk Turks who had cut off Christian access to Jerusalem, and were also sparked by the destruction of many Christian sacred sites and the persecution of Christians under the Fatimid caliph Al-Hakim. The crusaders comprised military units of Roman Catholics from all over western Europe, and were not under unified command. The main series of Crusades, primarily against Muslims in the Levant, occurred between 1095 and 1291. Historians have given many of the earlier crusades numbers. After some early successes, the later crusades failed and the crusaders were defeated and forced to return home.

Several hundred thousand soldiers became Crusaders by taking vows; the Pope granted them plenary indulgence. Their emblem was the cross — the term "crusade" is derived from the French term for taking up the cross. Many were from France and called themselves "Franks," which became the common term used by Muslims.

William Michael Albert Broad (born 30 November 1955), better known by his stage name Billy Idol, is an English rock musician. A member of the Bromley Contingent of Sex Pistols fans, Idol first achieved fame in the punk rock era as a member of the band Generation X. He then embarked on a successful solo career, aided by a series of stylish^{[citation needed]}music videos, making him one of the first MTV stars. Idol continues to tour with guitarist Steve Stevens and has a worldwide fan base.^{[citation needed]}

Idol was born in Stanmore, Middlesex, the son of a salesman.. The name Billy Idol was inspired by a schoolteacher's description of Broad as "idle".

In 1958, when Idol was two years old, his parents moved to Patchogue, New York, on Long Island. The family returned to England four years later with Idol and a younger child Jane (who had been born in the US), settling in Dorking, Surrey. In 1971 the family moved to Bromley, southeastern London, where Idol attended Ravensbourne School for Boys. Idol (rather William Broad) also attended Worthing High School for Boys (later becoming Worthing College), in West Sussex. In October 1975, Idol went to the University of Sussex, near Brighton, to pursue an English degree and lived on campus (East Slope) but left after year one (1976). He then went on to join the Bromley Contingent of Sex Pistols fans, a loose gang that travelled into town when the band played.