Answer:

redans

Answer	Crossword Clue
REDANS	Fortifications
REDANS	V-shaped field fortifications.
REDANS	Fortifications.

REDANS	Fieldworks.
REDANS	Military fieldworks.
REDANS	Angular fortifications.
REDANS	V-shaped ramparts.
REDANS	Fortified works
REDANS	Fieldworks
REDANS	V-shaped fieldworks
REDANS	Fortifications with double parapets