June 7, 1099 First Crusaders begin the siege of Jerusalem, dubbed the "Holy Land", with the help of 1,200 knights and 12,000 soldiers went to the city.
The whole army conducted a strict fasting in the late June, and go straight to the Mount of Olives.
However, this only served as the beginning of two-century religious wars between the Crusader and Arab over the control for Jerusalem.
In the 1000s, Christians in the city of Jerusalem repeatedly scorned by the Islamic rulers, especially under the leadership of Seljuk Turks in 1071.
It was year 1095 when Pope Urban II called out to help Christians in Jerusalem with crusaders, and immediately the Western European responded on his appeal.