The Sixth Battle of Iserlohn begins. The Alliance forces proceeds with Willem Holland's plan of using the main fleet as a diversion to keep the attention of the Imperial forces and allow Holland's squadron to close in to Iserlohn Fortress and breach its walls with a missile bombardment. Holland's plan works initially; however, he is intercepted by Reinhard von Müsel, who has anticipated this move. Reinhard then continues to make full use of the narrow geography of the Iserlohn Corridor and wreak havoc on the Alliance main fleet with his squadron.