William Duane, A military dictionary
“ Large bastions have the advantage of small ones, for this palpable reason; the [174] bastion being considered the weakest part of the body of a place, is always attacked; when there is room for troops, cannon and mortars, its natural weakness is greatly remedied.Gorge of a bastion, the interval between the extremity of one flank and that of the next.Flat bastion. When a bastion upon a right line is so constructed, that its demi-gorges do not form an angle, it is called a flat bastion. ”
