The Battle of Aspho Fields, also known as Operation: Leveler, was a major battle during the Pendulum Wars. The Battle of Aspho Fields forever changed the course of the war for Imulsion. Aspho Fields was a drained swamp area that led into Aspho Point, the place that housed the Hammer of Dawn Technology. During the battle, Marcus Fenix performed many heroic feats which were remembered even after he was imprisoned.