The work l’Art universel des fortifications is a french book written by Jean Du Breuil. Let us first take a closer look at the main title. It means : “The universal art of fortifications”. What does this term defines exactly ? First, “universal art” means a set of knowledge known by everyone, and that art would be that of “fortifications”, which designates the action of using military means to defend a specific territory. In the first dozen pages, we find a more specific and complete version of the title which we just discussed. This book is about the universal art of fortifications of french, dutch, spanish, italian and composed countries with the art of attacking the fortified places by the “furprifes” and defending too against the “furprifes” and against the force. This book is most certainly a neutral informative work since it does not seem to aim at a specific region of the world. Anyone who wishes to inform himself on the art of fortifications is most likely adequate to read this book. There is a table of contents. The first part is mainly about different definitions and example of military elements regarding fortifications, such as rampart, stronghold, pit etc… On the other hand, the second part is filled with several practice examples of fortifications theory application. There are quite a several number of illustrations in this book. Most of them are ground floor plans of geometrical fortifications. Their dominant presence is easily understanble because of the importance and consequent impact of intelligent geometrical shape formation of wall and rampart at this time (Vauban is certainly one of the best example in this case). The Author, Jean du Breuil, is a french writer and mathematician. He’s known for his works on perspective theory and practice. It makes sense that he would be interested in the innovative geometry and ingenuosity in shapes of fortifications. The book is fairly massive and robust, which actually fits well the word “fortifications”.