forced to finance his campaign against the Normans by using the wealth of the Eastern Orthodox Church, which had been put at his disposal by the Patriarch of Constantinople. In 1087, Alexios faced a new invasion. This time the invaders consisted of a horde of 80,000 Pechenegs from north of the Danube, and they were heading for Constantinople. Without enough troops to repel this new threat, Alexios used diplomacy to achieve a victory against the odds. Having bribed the Cumans, another barbarian tribe, to come to his aid, he advanced against the Pechenegs, who were caught by surprise and annihilated at the Battle of Levounion on 28 April 1091. With stability at last achieved in the west, Alexios now had a chance to begin solving his severe economic difficulties and the disintegration of the empire's traditional defences. In order to reestablish the army, Alexios began to build a new force on the basis of feudal grants (próniai) and prepared to advance against the Seljuks, who had conquered Asia Minor and were now established at Nicaea. Despite his improvements, Alexios did not have enough manpower to recover the lost territories in Asia Minor. Having been impressed by the abilities of the Norman cavalry at Dyrrhachium, he sent ambassadors west to ask for reinforcements from Europe. This mission was deftly accomplished – at the Council of Piacenza in 1095, Pope Urban II was impressed by Alexios's appeal for help, which spoke of the suffering of the Christians of the east and hinted at a possible union of the eastern and western churches. Pope Urban was concerned with increasing restlessness of the martial nobility in Western Europe, who, currently deprived of major enemies, were causing chaos throughout the countryside. Alexios's appeal offered a means not only to redirect the energy of the knights to benefit the Church, but also to consolidate the authority of the Pope over all Christendom and to gain the east for the See of Rome. First Crusade On 27 November 1095, Urban II called together the Council of Clermont in France. There, amid a crowd of thousands who had come to hear his words, he urged all present to take up arms under the banner of the Cross and launch a holy war to recover Jerusalem and the east from the 'infidel' Muslims. Indulgences were to be granted to all those who took part in the great enterprise. Many