Ce livre est un traité sur l'art militaire et la fortification, qui décrit les tactiques et les techniques utilisées pour les opérations militaires et la défense des fortifications. L'auteur examine également les différents types de fortifications et leur rôle dans les opérations militaires. Cette oeuvre est une source historique importante pour l'histoire militaire. This work has been selected by scholars as being culturally important, and is part of the knowledge base of civilization as we know it. This work is in the "public domain in the United States of America, and possibly other nations. Within the United States, you may freely copy and distribute this work, as no entity (individual or corporate) has a copyright on the body of the work. Scholars believe, and we concur, that this work is important enough to be preserved, reproduced, and made generally available to the public. We appreciate your support of the preservation process, and thank you for being an important part of keeping this knowledge alive and relevant.