06/13/2026
Before they reached Jerusalem they massacred the Jewish communities of Germany. When they took Jerusalem they killed every Muslim, Jew, and Eastern Christian inside. They wrote home calling it a miracle. The survivors called it genocide. The wounds created in 1099 are still felt today.The First Crusade of 1095-1099 is one of the most consequential military campaigns in the history of religion — and one of the most contested in its moral meaning.Pope Urban II delivered his call to crusade at Clermont on November 27 1095 in a speech whose exact words were not recorded but whose effects are among the best-documented in medieval history.The Seljuk Turks had expanded westward across the Byzantine Empire's territories in Anatolia, threatening Constantinople and cutting off Christian pilgrimage routes to Jerusalem.The Byzantine Emperor Alexios I Komnenos had appealed to Rome for military assistance.Urban seized the opportunity.He framed the response not as military aid to Byzantium but as something far more emotionally powerful — a holy war to reclaim the city of Christ's death and resurrection from Muslim rule.He promised plenary indulgence — the complete forgiveness of all sins — to those who took the cross.He told his audience that God willed it."Deus vult!" — "God wills it!" — became the battle cry of the Crusade.The response exceeded anything Urban had anticipated.Thousands of knights — trained warriors who saw in the Crusade both spiritual redemption and the opportunity for land and wealth in the East — took the cross.But also tens of thousands of ordinary people — peasants, minor clergy, women, the poor — who understood the call in their own terms and set out for Jerusalem with religious fervour and almost no practical preparation.The most disturbing manifestation of this popular religious excitement came before the main armies had even assembled.The Rhineland Massacres of 1096 — sometimes called the German Crusade or the People's Crusade — occurred when crusading forces moving through the Rhine Valley of Germany turned on the Jewish communities living in cities including Worms, Mainz, and Cologne.The theological logic — such as it was — was articulated by the crusaders themselves:"Why should we march to the ends of the earth to fight the enemies of Christ when the enemies of Christ live among us?"The Jewish communities of the Rhine Valley had lived in Germany for generations — many were merchants and financiers whose commercial relationships with Christian neighbours were long-established.They were not enemies of the Crusade.They were not involved in the control of Jerusalem.They were simply available.The massacres that followed were carried out by both the crusading forces and, in some cases, by local populations who used the religious fervour as cover for robbery and score-settling.Thousands of Jews were killed.Some communities, given the choice between baptism and death, chose collective su***de — killing their children and themselves rather than converting.The local bishops attempted to protect Jewish communities in several cities — sheltering them within their own palaces — with limited success.The formal crusading armies then moved south and east — through Hungary, through the Byzantine Empire's territories, into Syria and Palestine.The military campaign was a story of extraordinary suffering and extraordinary brutality on both sides.By June 1099 the main crusading force had reached Jerusalem — which was then under the control of the Fatimid Caliphate of Egypt.The siege lasted five weeks.On July 15 1099 the crusaders breached the walls.What followed has been described in accounts written by the crusaders themselves — accounts whose pride in the violence is one of the most historically confronting aspects of the entire episode.The entire population of Jerusalem was killed.Muslims — who had been the city's majority population — were killed throughout the city.Jews — who had retreated to their main synagogue — were killed when it was set on fire around them.Eastern Christians — who were theologically distinct from the Latin Christians doing the killing — were killed alongside their Muslim and Jewish neighbours.Raymond of Aguilers, a crusading chronicler who was present at the massacre, wrote with satisfaction:"Wonderful things were to be seen. Numbers of the Saracens had their heads cut off... Others were shot with arrows, or forced to jump from the towers; others were tortured for several days, then burned with flames. In the streets were seen piles of heads and hands and feet. One rode about everywhere amid the corpses of men and horses."He then described the crusaders entering the Temple of Solomon to give thanks, wading through blood up to their ankles.He called it a miracle.He called it God's judgment.The massacre of Jerusalem in 1099 reverberated through the Islamic world.The Arabic chroniclers who recorded it described it with grief and outrage that would fuel Muslim responses — military and cultural — for centuries.When Saladin recaptured Jerusalem in 1187 his treatment of the city's Christian inhabitants was — by deliberate, conspicuous contrast — merciful.He allowed them to ransom their freedom and leave.The contrast between Saladin's mercy in 1187 and the crusaders' massacre in 1099 became one of the foundational narratives of the relationship between the Christian and Islamic worlds — a narrative that has never been fully resolved.The Crusades continued in various forms for the next two centuries — eight major Crusades and numerous minor ones, each with its own mixture of religious sincerity, political calculation, commercial interest, and violence.The Fourth Crusade of 1202-1204 — notoriously — never reached the Holy Land at all.It was diverted to Constantinople — a Christian city — which the crusaders sacked with a thoroughness that permanently damaged the Byzantine Empire and embittered Eastern Christianity toward the Catholic West in ways that have never been fully healed.The Children's Crusade of 1212 — one of the most tragic episodes in crusading history — involved thousands of children from France and Germany marching toward the Mediterranean in the belief that their innocence would succeed where adult armies had failed.Most died of starvation and disease.Some were sold into slavery.None reached Jerusalem.The Crusades ended not in triumph or in defeat but in exhaustion — the crusader states in the Holy Land gradually losing ground to resurgent Muslim power until the last significant crusader presence, the city of Acre, fell in 1291.Two centuries of holy war.Millions of deaths.Jerusalem changed hands multiple times.And the wounds created by the violence of 1099 — and by the entire crusading enterprise — remain embedded in the relationship between the Christian West and the Islamic world in ways that no amount of subsequent history has entirely healed.
Did you know Crusaders massacred the Jewish communities of Germany before they even reached Jerusalem — then killed every Muslim, Jew, and Eastern Christian in Jerusalem when they took it — and wrote home calling it a miracle of God? Drop a ⚔️ in the comments.