The first Crusade, a wild mob of honest Christians, defaulting bankrupts, penniless noblemen and fugitives from justice, following the lead of half-crazy Peter the Hermit and Walter-without-a-Cent, began their campaign against the Infidels by murdering all the Jews whom they met by the way. They got as far as Hungary and then they were all killed.
This experience taught the Church a lesson. Enthusiasm alone would not set the Holy Land free. Organisation was as necessary as good-will and courage. A year was spent in training and equipping an army of 200,000 men. They were placed under command of Godfrey of Bouillon, Robert, duke of Normandy, Robert, count of Flanders, and a number of other noblemen, all experienced in the art of war.