J.E. Kaufmann is a retired teacher and presently an adjunct professor at Palo Alto Jr. College and H.W. Kaufmann, PhD, is a retired professor, and they live in the United States. Their most recent books on fortifications are The Maginot Line, The Atlantic Wall, The Forts and Fortifications of Europe 1815-1945: The Central States, The Forts and Fortifications of Europe 1815-1945: The Neutral States, Verdun 1916: The Renaissance of the Fortress, Castrum to Castle: Classical to Medieval Fortifications in the Lands of the Western Roman Empire and Castle to Fortress: Medieval to Renaissance Fortifications in the Lands of the Former Western Roman Empire.
""...recommended for general readers interested in European military history and specialists on military fortifications and coastal defences.""-- ""The Northern Mariner"" ""This book does offer the modeller both photographic views of various defensive structures, which is further assisted with cut through plans showing the structures in a manner that the modeller could replicate.""-- ""Armorama""