Fort Gibson, New York Harbor-- Part 1: On Oyster Island/Ellis Island

From New York State Military Museum.

Fort Gibson, 1795, New York County, Ellis Island.

New York State acquired Oyster Island, by then known as Ellis Island, from the City of New York in 1794 Shortly thereafter  the War Department established a twenty-gun battery there as well as a magazine and barracks.

During the War of 1812 it did not see action since the British did not attack New York City.  However, it was used  as a garrison post and held POWs.

--Brock-Perry