This collection of 57 papers, the second volume from an impressive 2012 conference at the Acropolis Museum in Athens, augments a substantial companion work that focuses on theory and practice (S. Müth, P.I. Schneider, M. Schnelle, and P.D. De Staebler, eds., Ancient Fortifications: A Compendium of Theory and Practice. Fokus Fortifikation Studies 1 [Oxford 2015]). These two volumes boldly place in high profile the archaeological research now concerned with this once ancillary area.