In
field fortifications generally a line of defense represented an assumed line
of fire from a flank prolonged across the front of a face. It indicated how
well or thoroughly fire from the flank crossed with fire from the face to
protect ground immediately in front of the face's parapet. The term was also
used to denote the direction and orientation of a line of fire from the face
of one field work across the face of another field work. In the design of
bastioned fronts of fortification a line of defense was taken as a line extending
from an exterior angle of the fortified polygon through the interior terminus
of the perpendicular to the intersection of the bastion flank and curtain.
In
field fortifications generally a line of defense represented an assumed line
of fire from a flank prolonged across the front of a face. It indicated how
well or thoroughly fire from the flank crossed with fire from the face to
protect ground immediately in front of the face's parapet. The term was also
used to denote the direction and orientation of a line of fire from the face
of one field work across the face of another field work. In the design of
bastioned fronts of fortification a line of defense was taken as a line extending
from an exterior angle of the fortified polygon through the interior terminus
of the perpendicular to the intersection of the bastion flank and curtain.
