King Andrew's well-mounted army defeated sultan Al-Adil I at Bethsaida on the Jordan River on 10 November 1217. Muslim forces retreated in their fortresses and towns. In Jerusalem, the walls and fortifications were demolished to prevent the Christians from being able to defend the city, if they did manage to reach it and take it. Muslims fled the city, afraid that there would be a repeat of the bloodbath of the First Crusade in 1099. The crusaders' catapults and trebuchets did not arrive in time, so they had fruitless assaults on the fortresses of the Lebanon and on Mount Tabor. Afterwards, Andrew spent his time collecting alleged relics. At the beginning of 1218 Andrew, who was very sick, decided to return to Hungary.