The battle for the throne of Atlantis continues! Ocean Master, Aquaman's conniving half brother, has rallied a force of mutineer Atlanteans in an attempt to displace King Arthur and take the throne! The Atlantean civil war has breached the waters of Metropolis. Track Tides of War in your Mission Journal and check the Events tab in the On Duty menu to battle for the Atlantean Outpost. Fight for your side, and reap the rewards, including a new Diving Helmet and Atlantean themed base items.