From publisher blurb:
Nine hundred years ago, the Dark Ages ended. But a new and terrible age then began, one of great conflicts: brutality and heroism, terror and courage, glorious victory and disastrous defeat. Western Europe turned its eyes eastward toward the Holy Land and moved to take it from the Saracens. But the forces of Islam would have none of this, and under the call of jihad they arose to meet the invaders.
The Crusades supplement presents the lad of Outremer as a powerful AD&D setting, with historical background and maps; new character kits; details on strange magic and fantastic beasts; and adventures. It is a violent and dangerous world, but one of promise and hope as well.
Only the brave need come.