The fourth and final DLC for Battlefield 1, the Apocalypse DLC, is centered around some of the most brutal battles of the Great War, containing five maps, six guns, and a new game mode, among other additions. The three infantry-based maps of Apocalypse reflect three of the bloodiest battles of World War I; Caporetto set in present-day Slovenia, Passchendaele in Belgium, and River Somme in France. The DLC introduced a new game mode titled "Air Assault" in the remaining two maps. (wikipedia.org)