Issue Vol. 12 was published on March 2005.

From summary:

• The Oldest Bastion in East Bohemia
  Jiri Slavik (Czech)
  
  
• Fortress Leopoldov
  Ivo Vondrovsky (Czech)
  
  
• Battery Chaberton
  Caspar Vermeulen (The Netherlands)
  
  
• Milion Bunkers of The Mannerheim Line
  Bair Irincheev (Russia)
  
  
• Unremembered Fortresses of The Maginot Line
  Martin Dubanek (Czech)
  
  
• Czechoslovakian Plans of Fortifications From 1946
  Martin Dubanek (Czech)
  
  
• Fort Villey-le-Sec of Toul Fortress
  Ondrej Filip (Czech)