They say that the term “hazing” appeared in those distant times, when future knights were subjected to all sorts of tests by their senior comrades in order to prepare them for the hardships of their future military life. “The educational journeys of young Europe to the East” claimed the lives of tens of thousands of pilgrims in armor. Whether they managed to get to heaven faster, as promised, history is silent. But, one way or another, they laid down their heads in the very place where the Earth meets the Sky, which means that this is where our path lies, which, with the light hand of historians, we habitually call the Crusades... How did it happen that, setting out to punish Infidels, valiant knights drowned in blood the most Christian of all cities? How did the sorceress Melusina help the Sultan defeat the invincible knightly army? Why did the sea never part for the participants of the children's hike? Where did the Holy Grail disappear from Montsegur, conquered by the crusaders? And why are scientists still arguing about what the Western Europeans’ campaigns to the East were - the embodiment of a bloody revelry or a high spiritual mission? About this and much more - in the book “History of the Crusades” by Ekaterina Monusova.