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- Seacoast_defense_in_the_United_States abstract "Seacoast defense was a major concern for the United States from its independence until World War II. Before airplanes, America's enemies could only reach her from the sea, making coastal forts an economical alternative to standing armies or a large navy. After the 1940s it was recognized that fixed fortifications were obsolete and ineffective against aircraft and missiles. However, in prior eras foreign fleets were a realistic threat, and substantial fortifications were built at key locations, especially protecting major harbors.The defenses heavily depended on fortifications but also included minefields, nets and booms, ships, and airplanes. Therefore, all of the armed forces participated in seacoast defense, but the US Army Corps of Engineers played the central role.Designs evolved and became obsolete with changes in the technology available to both the attacking forces and the defenders. The evolution of the US seacoast defense system is generally identified among several "systems", which are somewhat defined by the styles used, but more so by the events or trends which periodically stimulated new funding and construction.".
- Seacoast_defense_in_the_United_States thumbnail Fort_mc_henry_cannon_Baltimore.jpg?width=300.
- Seacoast_defense_in_the_United_States wikiPageExternalLink v=onepage&q=Popular%20Science%201935%20plane%20%22Popular%20Mechanics%22&f=true.
- Seacoast_defense_in_the_United_States wikiPageExternalLink guard-us.
- Seacoast_defense_in_the_United_States wikiPageExternalLink cdsghis4.htm.
- Seacoast_defense_in_the_United_States wikiPageExternalLink CACorg2008.pdf.
- Seacoast_defense_in_the_United_States wikiPageExternalLink history.htm.
- Seacoast_defense_in_the_United_States wikiPageExternalLink mineplr.html.
- Seacoast_defense_in_the_United_States wikiPageExternalLink coastal-defense.htm.
- Seacoast_defense_in_the_United_States wikiPageExternalLink HDSF.html.
- Seacoast_defense_in_the_United_States wikiPageExternalLink 01idx.htm.
- Seacoast_defense_in_the_United_States wikiPageExternalLink coasthome.html.
- Seacoast_defense_in_the_United_States wikiPageID "13422946".
- Seacoast_defense_in_the_United_States wikiPageRevisionID "592767508".
- Seacoast_defense_in_the_United_States hasPhotoCollection Seacoast_defense_in_the_United_States.
- Seacoast_defense_in_the_United_States subject Category:Coastal_fortifications.
- Seacoast_defense_in_the_United_States type Artifact100021939.
- Seacoast_defense_in_the_United_States type CoastalFortifications.
- Seacoast_defense_in_the_United_States type DefensiveStructure103171356.
- Seacoast_defense_in_the_United_States type Fortification103385557.
- Seacoast_defense_in_the_United_States type Object100002684.
- Seacoast_defense_in_the_United_States type PhysicalEntity100001930.
- Seacoast_defense_in_the_United_States type Structure104341686.
- Seacoast_defense_in_the_United_States type Whole100003553.
- Seacoast_defense_in_the_United_States type YagoGeoEntity.
- Seacoast_defense_in_the_United_States type YagoPermanentlyLocatedEntity.
- Seacoast_defense_in_the_United_States comment "Seacoast defense was a major concern for the United States from its independence until World War II. Before airplanes, America's enemies could only reach her from the sea, making coastal forts an economical alternative to standing armies or a large navy. After the 1940s it was recognized that fixed fortifications were obsolete and ineffective against aircraft and missiles.".
- Seacoast_defense_in_the_United_States label "Seacoast defense in the United States".
- Seacoast_defense_in_the_United_States sameAs Q17165392.
- Seacoast_defense_in_the_United_States sameAs Q17165392.
- Seacoast_defense_in_the_United_States sameAs Seacoast_defense_in_the_United_States.
- Seacoast_defense_in_the_United_States wasDerivedFrom Seacoast_defense_in_the_United_States?oldid=592767508.
- Seacoast_defense_in_the_United_States depiction Fort_mc_henry_cannon_Baltimore.jpg.
- Seacoast_defense_in_the_United_States isPrimaryTopicOf Seacoast_defense_in_the_United_States.