An
angle of defense measured the perpendicularity of a column of fire projected
from one field work or section of a field work's parapet toward or across
the front of another field work or section of the same field work's parapet.
In the bastion system of fortification the angle of defense was formed by
prolonging the line of a bastion face to the flank of a collateral bastion.
It served as important measure of the directness of fire with which one work
or part of a work could support another work or another part of the same
work.
An
angle of defense measured the perpendicularity of a column of fire projected
from one field work or section of a field work's parapet toward or across
the front of another field work or section of the same field work's parapet.
In the bastion system of fortification the angle of defense was formed by
prolonging the line of a bastion face to the flank of a collateral bastion.
It served as important measure of the directness of fire with which one work
or part of a work could support another work or another part of the same
work.
