The earliest fortifications in Japan were developed with the appearance of the first emperors in around 250 and were often simple wooden constructions. As internal strife became a way of life in Japan, more and increasingly elaborate fortifications. This book covers the entire period of Japanese castle development from the very first fortifications, through to the sophisticated structures of the 16th and 17th century, explaining how they were adapted to withstand Samurai firearms and exploring life within these castles. With unpublished photographs from the author's private collection and full-color artwork, including detailed cutaways, this is an essential guide to the fascinating development of Japanese fortifications.