1A - The preaching of the Second Crusade
Learn how an appeal after the fall of Edessa mobilised a major expedition, and why that expedition failed in the East. Follow the decisions between recruitment and Damascus rather than treating religious enthusiasm as a guarantee of military success.
Preaching and taking the cross
The capture of Edessa in December 1144 challenged the security of Outremer and the memory of the First Crusade's success. Pope Eugenius III issued Quantum praedecessores in December 1145 and renewed the appeal in 1146. He presented the eastern Christians' losses as a responsibility for the West and invoked Urban II's precedent. Participants were offered spiritual benefits and protection of their interests while absent, helping make a costly journey a religiously meaningful commitment.
Bernard of Clairvaux, a leading Cistercian abbot, gave this appeal exceptional influence. At Vézelay at Easter 1146 he preached before Louis VII and a large gathering of nobles. He subsequently helped recruit Conrad III, the German king. Bernard's authority, networks and ability to address aristocratic audiences turned an appeal into a movement with major royal participation. The papacy authorised the undertaking; preaching connected that authorisation to people who could supply men and money.
Motives could overlap. Louis VII could express penitence, fulfil a pilgrimage and demonstrate Christian kingship through the same expedition. Nobles could follow their lord and relatives while seeking spiritual reward. The promise of religious merit helps explain willingness to incur expense and danger; prestige and social obligation help explain who joined particular contingents. A single exclusive motive is usually less convincing than this combination.
Recruitment also exposed the difficulty of directing enthusiasm. Violence against Jewish communities accompanied some preaching in the Rhineland, associated with the monk Ralph, or Radulf. Bernard opposed these attacks. The contrast shows that popular hostility was not identical to the policy of every major clerical leader. Preaching could mobilise action which an authorised preacher then tried to restrain.
The journey and its losses
Louis VII and Conrad III led separate armies east in 1147. Their passage through Byzantine lands demanded provisions, discipline and agreement with Manuel I. Manuel had to protect his subjects and his own frontiers while allowing large foreign forces through the empire. His diplomacy with Turkish rulers did not necessarily mean he wanted a crusader defeat: an emperor could support the expedition and still seek to limit danger to Byzantium.
The principal contingents crossed Anatolia rather than travelling together under a single commander. Conrad's force suffered a major defeat near Dorylaeum in October 1147. French progress also brought hunger, loss of horses and attacks, including the disaster near Mount Cadmus in January 1148. Difficult terrain stretched columns and separated fighting men from baggage and vulnerable followers. A large army could be hard to supply and manoeuvre; size alone was no protection against mobile opponents who understood the routes.
Louis eventually obtained passage by sea from the southern Anatolian coast. Not everyone could secure a place, and survivors reached the East by different routes. The expedition had lost cohesion as well as numbers. Conrad received assistance in Constantinople before returning to the crusade. These details qualify any simple claim that all Byzantines consistently betrayed all westerners.
The losses did not make further action impossible. The surviving royal forces were still valuable to the eastern states. They did, however, reduce the range of feasible operations and make it harder to fulfil expectations created during preaching. The causal sequence runs from supply and route problems, through losses and fragmentation, to a narrower military opportunity in 1148.
Choosing and attacking Damascus
At Antioch, Raymond of Poitiers wanted Louis to campaign against the powers threatening his principality. Louis instead continued to Jerusalem to fulfil his pilgrimage. At the council near Acre in June 1148 the kings and leading eastern nobles agreed to attack Damascus. The city offered wealth, strategic importance and a conspicuous achievement. Recovering distant Edessa was much harder than merely repeating the original purpose of the appeal.
Damascus had previously cooperated with Jerusalem against Zengi. Its relations with the kingdom had already deteriorated before the siege, so the choice should not be explained solely as ignorant western visitors destroying a perfectly stable alliance. Baldwin III and eastern leaders also participated in the decision. Nevertheless, attacking the city risked eliminating an independent power which could help prevent domination of Syria by Nureddin.
The attack began on 24 July 1148. The army initially approached through orchards on the western side, where food and water were available but defenders could exploit walls, trees and restricted paths. It then moved to a less well supplied position. Resistance continued, and the possibility of forces arriving from Nureddin and Mosul increased the urgency. The siege was abandoned on 28 July. William of Tyre's account describes both the physical problems and competing explanations of the decision to move.
Stories of treachery and bribery circulated, but they do not establish a single proven explanation. William wrote later and reported accusations. A defensible judgement rests more securely on inadequate preparation, changing positions, local resistance, the threat of relief and disagreement about the prospective conquest. The failure resulted from decisions during the operation as well as losses on the journey.
Outcomes on different fronts
The eastern expedition neither recovered Edessa nor captured Damascus. Conrad left in 1148; Louis returned to the West in 1149. For Outremer, the enormous effort had produced no lasting territorial recovery. The gap between royal prestige and military achievement was especially damaging because expectations had been unusually high.
Yet crusading in 1147–1148 was not confined to the eastern expedition. An Anglo-Flemish fleet assisted the Portuguese capture of Lisbon in 1147. Other campaigns took Almería in 1147 and Tortosa in 1148. A campaign against the pagan Wends in the Baltic region had more limited results. Giles Constable's study of contemporary accounts draws attention to this broader collection of campaigns.
These different outcomes explain why an overall verdict needs clear criteria. If success means securing Outremer after Edessa's fall, the Second Crusade failed. If the enquiry concerns expansion of Latin Christian power across several frontiers, the Iberian gains require recognition. They did not compensate Jerusalem for the missing recovery in Syria, but they prevent the eastern defeat being treated as the only result anywhere.
The interpretation problem is therefore about scope as well as blame. An argument that leadership mistakes mattered should explain the decisions at Damascus. An argument stressing structural obstacles should explain distance, supply and political divisions. Neither can explain the whole undertaking merely by saying that the participants lacked faith: they incurred great costs and reached the East, yet faced tasks which enthusiasm could not solve.
Separate mobilisation, military execution and regional outcomes. Success in recruiting a crusade did not guarantee success at Damascus, and failure in Syria did not erase gains in Iberia.