The Battle of Iyen-Oursta was a major engagement of the Gallente-Caldari War. It is the second largest battle in the history of New Eden and saw the capsule-fitted frigates of the Caldari State pitted against the drones of the Gallente Federation. It was fought over the course of 15 hours. In the end, the Gallente held the field, though the Caldari claimed victory as they had inflicted more casualties.