Introduction -- Chronology -- Hawaii and its history -- The initial Oahu defense plans -- Building the defenses -- Garrison life on Oahu -- Defense modification between the wars -- Fortress Oahu at war 1941-45 -- Postwar changes and developments -- Assessment and conclusions -- The sites today -- Bibliography and further reading -- Appendix: Coastal artillery seacoast cannons on Oahu 1907-1950 ; Fixed artillery defenses of Oahu 1907-50.