Even though the Crusaders ostensibly were there to help the Byzantines, ostensibly to take back the Holy Land, as they travel through foreign lands, they often wreak a lot of havoc, even sometimes on the Byzantines themselves. But the People's Crusade itself was very unsuccessful. By the time they got to the Anatolian Peninsula, remember, Peter the Hermit was leading, there were women, there were children, there were untrained peasants fighting. They were massacred by the Turks when they got to the Anatolian Peninsula. But eventually, the pope was able to organize a more formal, what eventually gets called First Crusade. And once again, it surpasses the pope's expectations and far surpasses Alexios, the Byzantine emperor's expectations, and is even a little bit frightening to him, where you have on the order of 100,000 soldiers coming from Western Europe, taking these various routes by both land and by sea. And in 1099, they are eventually able to take Jerusalem from the Muslims.