Demi-Lune and Outer Defenses

Demi-Lune at Fort Warren

BHN/B. Knotts

Quick Facts

Location:

Georges Island

Significance:

Defense structure

MANAGED BY:

Massachusetts Department of Conservation & Recreation

The coverface served as an initial line of defense and shielded the granite walls of Fort Warren from direct fire by enemy cannon from either a broad sided ship or an invaded nearby island. The crescent-shaped stone structure within it is known as the Demi-Lune. The Demi-Lune offered defending soldiers a covered position to fire at attacking enemy foot soldiers approaching from the beach. The road to the left was constructed later.

Fortify Your Vocabulary:

Coverface: A large sloped, earthen mound that camouflaged and protected the granite walls of the fort from enemy fire.