their rapacious greed. Historians used to believe that a rise in Europe’s population led to a crisis of too many noble "second sons," those who were trained in chivalric warfare but who had no feudal lands to inherit. The Crusades, therefore, were seen as a safety valve, sending these belligerent men far from Europe where they could carve out lands for themselves at someone else’s expense.

Modern scholarship, assisted by the advent of computer databases, has exploded this myth. We now know that it was the "first sons" of Europe that answered the pope’s call in 1095, as well as in subsequent Crusades. Crusading was an enormously expensive operation. Lords were forced to sell off or mortgage their lands to gather the necessary funds. They were also not interested in an overseas kingdom. Much like a soldier today, the medieval Crusader was proud to do his duty but longed to return home. After the spectacular successes of the First Crusade, with Jerusalem and much of Palestine in Crusader hands, virtually all of the Crusaders went home.

Only a tiny handful remained behind to consolidate and govern the newly won territories. Booty was also scarce. In fact, although Crusaders no doubt dreamed of vast wealth in opulent Eastern cities, virtually none of them ever even recouped their expenses. But money and land were not the reasons that they went on Crusade in the first place. They went to atone for their sins and to win salvation by doing good works in a faraway land.