It is 5:20 AM, May 10, 1940. Twelve German gliders have just landed on the "Eben Emael Plateau", the top casement of what is considered to be the most impregnable fort in the world. Eben Emael controls the vital confluence of the Albert Canal. Codenamed "Granite", the German force is an elite assault party of the 7th Airborne Division, and contains a force of Sturmpioners and Falschemjagers. The rivetments and steel cupolas of Eben Emael must be destroyed within the first four hours (eleven turns) if the bridges of the Mastricht Corridor are to be secured on schedule.