Code Geass: Akito the Exiled 3: The Brightness Falls (2015) on Netflix

Plot summary

W-0 has seen the face of the enemy behind the Geass placed on Akito Hyuuga, and the squad now tries to reach Castle Weisswolf, its base. A snag over the unit's military identification strands the members in Warsaw, where local gypsies offer them help. While they wait, the squad's members spend time together and their bonds deepen. On the Britannian side, Julius Kingsley, an advisor, and Suzaku Kururugi, the guard at his side, take up work with the Knights of St. Michael. That order means to crush the European resistance, with a giant weapon, the Ark Fleet, behind it.