The island was part of the Manila and Subic Bay Harbor Defense Command.
Plan to install 16 inch guns on Monja Island. From Tony Feredo.
Fort Drum Construction, Fraile Island from CSDG, North View
Fort Drum Construction, Fraile Island from CSDG, North View.
Fort Drum Construction, Fraile Island from CSDG, SW View.
Fort Drum Construction, Fraile Island from CSDG, East View.
