Flagstaff Fort

A Patriot Redoubt built in June 1776, located on Signal Hill at the narrows on Staten Island. Site of an earlier 1663 blockhouse by De Vries (not named or listed). Taken by the British in 1776 and by July 1779 a redoubt with gun platforms for 26 cannon were built. In 1782 had five bastions. Evacuated 1783. Later the site of Fort Tompkins in 1806, that along with others grew into Fort Wadsworth.

Source

 * New York State Division of Military and Naval Affairs: Military History