This is the first title in a series that takes a detailed look at fortifications and defensive systems throughout history. The prolonged and bloody fighting for control of the Japanese occupied Pacific islands in World War II is a key point in the history of 20th century warfare. No two islands were alike in the systems and nature of the defensive emplacements - this title examines specific islands, as well as taking a close look at a "generic" island defense model. Also covered are island reinforcement plans as well as air and naval support, which seldom materialized. Such aspects as communication and ventilation systems, external obstacles and defenses are also dealt with.