Seacoast Defense In The United States
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.
Read more about Seacoast Defense In The United States: Early Defenses, Civil War, Post Civil War, Between The Wars, World War II, Post War Defensive Missiles, See Also
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