Hitler's Fortresses: German Fortifications and Defences 1939-45 (General Military)

From the Siegfried Line to the Atlantic Wall to central Italy, this detailed guide to every level of defensive project in the Third Reich won't disappoint.
It takes you inside Channel Islands' pillboxes, Normandy coastal gun positions, and emplaced tank turrets on the Gothic Line in Italy. The secretive world of Hitler's command bunkers is revealed in detail, and the principles and engineering of basic frontline defences are explained, showing how the average German soldier prepared to stand his ground. There is also a dedicated chapter on special-purpose fortifications, including U-boat pens, V-weapon sites, and flak towers.