For all you fortifications enthusiasts, here are three illustrated volumes depicting the history and development of the fortifications around the strategic city of Liege in the French speaking part of Belgium. The defense of Liege was of paramount importance as it sat on what was considered to be the principal potential German invasion route. The books cover respectively the outer fortifications and the city fortifications. These books are in French, but fortification enthusiasts, whether they read the language or not, will learn a great deal about the planning and design of city fortifications following the lessons learned in World War l."