The five ships of the Deutschland
class were the last pre-Dreadnougth battleships build in Germany. Based on the previous Braunschweig
class, the new ships were slightly better protected, but lost a bit of the good maneuverability. The artillery of those ships was kept quite similar to the one of their predescessors.
With their old fashioned design, those ships were only use as second line battleships during World War I, but all took part in the Battle of Jutland. Because of their age those ships were among the few battleships, Germany was allowed to keep after World War I, two of them even saw action in World War II. For more information on this, see the Kriegsmarine page about Schleswig Holstein