Crusade is a fantasy novel by James Lowder, set in the world of the Forgotten Realms, and based on the Dungeons & Dragons role-playing game.

Alerted by the witches of Rashemen, King Azoun IV of Cormyr fails to convince his entourage and his allies in the magnitude of the threat.

Although suspecting (rightly) rear political thoughts, Azoun accept this help and is an alliance of Cormyrians, the Dalesfolk, the Sembians, dwarf of the Foothills of the Earth and the Centaurs of forest Léthyr convinced by Princess Alusair who arrived in the region of Thesk, soon joined by Zhents forces, commanded by orcish General Vrakk.

It is only thanks to an ingenious stratagem that the coalition succeeds in isolating the Khahan and his Praetorian guard the rest of Tuigan.

The Tuigan army's private chef folds under the command of General Chanar Ong Kho, General Batu Min Ho refuses to be captured and committed suicide, joining his murdered family, while the monk Koja is presented to the king Azoun that loads to tell everything he knows about Tuigan.