Published on 15 Sep 2016
After the United States acquired the Philippines from Spain, the U.S. Board of Fortifications recommended that important harbors be fortified. This led to the development of defenses on several islands at the mouth of Manila and Subic Bays. One of these was El Fraile Island which would later become Fort Drum, America’s concrete battleship.
Read more about America’s concrete battleship, Fort Drum, here: http://www.wearethemighty.com/articles/americas-concrete-battleship-defended-manila-bay-until-the-very-end
June 25, 2017
Fort Drum – America’s concrete battleship
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