sentences:  The units of the 25th Mixed Ersatz Brigade were from the VII Army Corps area, which included the Prussian Province of Westphalia, the Lower Rhine portion of the Prussian Rhine Province, the Principality of Lippe, and the Principality of Schaumburg-Lippe.The units of the 37th Mixed Ersatz Brigade were from the X Army Corps area, which included most of the Prussian Province of Hanover, the Grand Duchy of Oldenburg, and the Duchy of Brunswick.The units of the 43rd Mixed Ersatz Brigade were from the XI Army Corps area, which included the Hesse-Kassel (or Hesse-Cassel) portion of the Prussian Province of Hesse-Nassau, the Grand Duchy of Saxe-Weimar-Eisenach, the Duchies of Saxe-Coburg-Gotha and Saxe-Meiningen, the Principalities of Reuss Elder Line, Reuss Younger Line, Schwarzburg-Rudolstadt, Schwarzburg-Sondershausen, and Waldeck, and portions of the Prussian Province of Saxony, including the region around Erfurt.