National Historic Landmark-Fort Mifflin

National Historical Landmark-Fort Mifflin

In October and November 1777, Fort Mifflin was the scene of a spirited defense by the Americans against a British fleet intent on opening the Delaware River supply line into newly captured Philadelphia.

Although the British captured ...

Fort Mifflin (Mud Fort) on Mud Island

1772

Report from the Fort (during construction)

25 September 1794 . Pierre Charles L’Enfant, Engineer to Henry Knox, Secretary of War

A place destitute of every comfort for the hands [workmen]; lay open to all accidents of the season [and ...

The Siege of Fort Mifflin

November 10 to 15, 1777

Report from the British Side:

Journal of Captain John Montresor

November 10th: We expressed our batteries against Mud Island Fort, the whole consisting of two 12 pounders, six 24 pounders, guns and one 13 inch ...

Fort Mifflin

Laid out in 1771 by the engineer John Montrésor. Heroically held by the Americans under British siege until they were forced out, Nov. 15, 1777. Rebuilt 1798-1800 according to L’Enfant’s design and enlarged in the 19th century. A U.S. military ...