Montage of Ramparts and Plan of Dürer's fest schloß (fortified citadel), after his Etliche Underricht zu Befestigung der Stett, Schloß und Flecken (1527) [Source: Juan Luis González García, “Alberto Durero, Tratadista de Arquitectura y Urbanismo Militar”, in Alberto Durero, Tratado de Arquitectura y Urbanismo Militar (Madrid: Ediciones Akal, 2004), p. 39].In 1527, Albrecht Dürer published his treatise on military architecture, the Etliche Underricht zu Befestigung der Stett, Schloß und Flecken ("Various Instructions in the Fortification of Cities, Castles, and Towns"). Though…