USA HISTORY

Detailed explanation-1: -PARAPET. A parapet is a low wall or railing along the edge of a rampart. The parapet mostly contains embrasures or perforations for guns to be mounted and fired. It also functions as a protective barrier for the rampart.

Detailed explanation-2: -Curtain: The walls of a fort located between two bastions. Along the bastions, the curtains comprise the main walls of the fort. Another name for the main walls of a fort is scarp.

Detailed explanation-3: -In fortification architecture, a bank or rampart is a length of embankment or wall forming part of the defensive boundary of a castle, hillfort, settlement or other fortified site. It is usually broad-topped and made of excavated earth and/or masonry.

Detailed explanation-4: -1 Thick wall in fortifications for defence, with a walkway or platform on top for the defenders, and a battlemented parapet. 2 Defensive mound of earth, with an inclined slope on the outside, its top flat and wide enough for guns and troop-movements, protected by a parapet.

Detailed explanation-5: -A defensive wall is a fortification usually used to protect a city, town or other settlement from potential aggressors. The walls can range from simple palisades or earthworks to extensive military fortifications with towers, bastions and gates for access to the city.