does anyone publish a self guided tour of verdun and surrounding WW 1 battle fields and the Maginot Line forts
Richard, I don't know of one but the internet is your friend. I can recommend the Citadel at Verdun, Fort Fermont, Fort Douaumont, and the Ossuary (and museum) at Fort Douaumont. Also the American cemetery at Meuse-Argonne and the nearby memorial at Montfaucon. Fort Fermont is maintained by volunteers and features a ride in a former ammunition train to one of the gun emplacements. Pretty cool stuff.
We purchased Major and Mrs. Holt guide before we spent ten days in Verdun. They were great. They provided great driving directions, as well as history. We saw a lot we would have missed without it. That and a good map and we were good to go!
Here is a link to their books on Amazon:
In addition to advice given here, do a google search for 'self guided tour of verdun' and self guided tour of maginot line'.
You might think of other topics of searches. I usually find more information this way and any other.
There are several underground areas that are open for tours, such as Simmersdorf, However, based on our experience, unless you are there in the height of tourist season - that would be August! - they are open at irregular hours. The posted or advertized hours are "soft." Call ahead or have your local hotel/hostel call to make sure they are really open. If you have a car, just driving around on the back roads you will see the abandoned, mushroom like circular fortifications. We would just get out of the car and explore the ruins - very interesting!