The Siege of Cair Paravel was a successful overthrowing of the Old Narnians by the Telmarines that occurred in 1998 Narnian time. The Structure of Cair Paravel was bombarded by catapults used by the Telmarine army, which destroyed the castle. The Telmarine battle fleet was also used during the siege to land troops. The Narnians knew they had to get Susan Pevensie's horn before the Telmarines got it and destroyed it. They were able to retrieve it, and then fled, for they knew that there was no victory in that fight and the only thing to save them in the future if needed was the horn.