United States seacoast defense systems
E285972
UNEXPLORED
United States seacoast defense systems were a series of evolving coastal fortifications and armaments designed to protect the nation’s harbors and shorelines from naval attack.
Observed surface forms (1)
| Surface form | Occurrences |
|---|---|
| U.S. Pacific defense network | 1 |
Referenced by (2)
Full triples — surface form annotated when it differs from this entity's canonical label.
this entity surface form:
U.S. Pacific defense network