Fort Sumter, where the Civil War started on April 12, 1861, defended Charlestown Harbor through World War II. Granted it was upgraded with 12-inch M1888 guns. The fort was deactivated in 1947 and became a national monument the next year.
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Fort Sumter, where the Civil War started on April 12, 1861, defended Charlestown Harbor through World War II. Granted it was upgraded with 12-inch M1888 guns. The fort was deactivated in 1947 and became a national monument the next year.