Several ships in the United States Navy have been named USS ''Monocacy'' for the
Battle of Monocacy
The Battle of Monocacy (also known as Monocacy Junction) was fought on July 9, 1864, about from Frederick, Maryland, as part of the Valley Campaigns of 1864 during the American Civil War. Confederate States Army, Confederate forces under Lieut ...
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* , a gunboat launched in 1864, and served until 1903
* , commissioned in 1914 and decommissioned in 1939
* , originally the civilian tug ''Monocacy'' (1905)
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United States Navy ship names