First+Crusade

One day, the Byzantine Emperor asked Urban II for help. He said he needed help fighting off the Muslims in Turkey, expecting a small band of Western knights to give aid. But Urban thought this was a fine opportunity to take back the Holy Land for Christianity. Therefore, hundreds of thousands of Christians showed up at Constantinople, demanding a meal. Then they went off to the Holy Land, capturing Jerusalem, Tripoli, Antioch, and Edessa. It was a smashing success.

See here, they took all these lands for Christ. Was Christ pleased? Who knows.