Fort Delaware in the War of 1812

From Wikipedia.

On Pea Patch Island in the Delaware River.

After the island was given to the federal government by Delaware for the construction of a fortification, not a whole lot was done during the war.  What was done was directed largely by Captain Samuel Babcock, who also worked on the defenses of Philadelphia.

A seawall and dykes were built around the island but there was no evidence that an actual fort of any sort was on the island when the war ended.  A martello tower was planned for it.

Construction of a star fort began on the island December 8, 1817.  Chief engineer Joseph Totten designed the fort.

--Brock-Perry