Crusades
The term "crusade" used in modern historiography at first referred to the wars in the Holy Land beginning in 1095, but the range of events to which the term has been applied has been greatly extended, so that its use can create a misleading impression of coherence, particularly regarding the early Crusades. The term used for the campaign of the First Crusade was "iter" "journey" or "peregrinatio" "pilgrimage". The terminology of crusading remained largely indistinguishable from that of pilgrimage during the 12th century, reflecting the reality of the first century of crusading where not all armed pilgrims fought, and not all who fought had taken the cross. It was not until the late 12th to early 13th centuries that a more specific "language of crusading" emerged. Pope Innocent III used the term "negotium crucis" "affair of the cross" for the Eastern Mediterranean crusade, but was reluctant to apply crusading terminology to the Albigensian crusade. The "Song of the Albigensian Crusade" from about 1213 contains the first recorded vernacular use of the Occitan "crozada". This term was later adopted into French as "croisade" and in English as "crusade". The modern spelling "crusade" dates to c. 1760. Sinibaldo Fieschi (the future pope Innocent IV) used the terms "crux transmarina" for crusades in Outremer against Muslims and "crux cismarina" for crusades in Europe against other enemies of the church. Medieval Armenian term for Crusades — xacˇ‘e˘nkalk‘.
Church of the Holy Sepulchre
Many historians maintain that the main concern of Pope Urban II, when calling for the First Crusade, was the threat to Constantinople from the Turkish invasion of Asia Minor in response to the appeal of Byzantine Emperor Alexios I Komnenos. Historians agree that the fate of Jerusalem and thereby the Church of the Holy Sepulchre was of concern if not the immediate goal of papal policy in 1095. The idea of taking Jerusalem gained more focus as the Crusade was underway. The rebuilt church site was taken from the Fatimids (who had recently taken it from the Abassids) by the knights of the First Crusade on 15 July 1099.
The First Crusade was envisioned as an armed pilgrimage, and no crusader could consider his journey complete unless he had prayed as a pilgrim at the Holy Sepulchre. Crusader Prince Godfrey of Bouillon, who became the first crusader monarch of Jerusalem, decided not to use the title "king" during his lifetime, and declared himself "Advocatus Sancti Sepulchri" ("Protector [or Defender] of the Holy Sepulchre"). By the crusader period, a cistern under the former basilica was rumoured to have been the location where Helena had found the True Cross, and began to be venerated as such; although the cistern later became the "Chapel of the Invention of the Cross," there is no evidence of the rumour before the 11th century, and modern archaeological investigation has now dated the cistern to 11th century repairs by Monomachos.
According to the German clergyman and orient pilgrim Ludolf von Sudheim, the keys of the Chapel of the Holy Sepulchre were in hands of the "ancient Georgians" and the food, alms, candles and oil for lamps were given them by the pilgrims in the south door of the church.