The Slitherine website is now accepting signups to beta test Fortress Metz, a new expansion for Battle Academy, which is coming to the Windows, OS X, and iOS editions of the World War II strategy game as an in-app purchase. Here's word:

Metz, located in Lorraine, has been for centuries an historic garrison town. After its annexation to Germany following the Battle of France in 1940, it became a stronghold for the Third Reich and a major target for the Allied forces. Following the Normandy landings, the U.S. Third Army under the command of General George S. Patton attacked the city fortifications and, after four months of fighting, broke through and freed Metz from occupation in late 1944.

Soon you will be able to relive those days in the latest expansion of one of the most critically-acclaimed tactical wargames, Battle Academy: Fortress Metz. With new Panzer Brigades and units like the German Jagdpanzer IV/70, the Hummel, Sdkfz 234/1 armored cars and more, Fortress Metz is a must-have expansion!