This is a dictionary of Fortifications, all in French but with plenty of illustrations.  A brave attempt to cover a vast subject.

La fortification: Histoire et dictionnaire : cartes de France des ouvrages fortifiés Broché, Published 1991.  A second hand soft cover book in reasonable condition.  The author is
Pierre Sailhan

POSTAGE COST: If the delivery address is outside the United Kingdom, then please also buy a Additional Postage for EU or Rest of the World, see https://fsgfort.com/product/postage-costs/

This books was donated to the FSG by Gill Drury on behalf of NICK.  All proceeds are to the Charity.