another page, I just discovered a couple months ago, about atlantikwall in france, mostly bunker oriented:
for non-french speakers, there is a good section on bunkers and its parts:
home:
http://site.voila.fr/bunkers
bunkers main (whitout frames):
http://site.voila.fr/bunkers/bunk.htm
there the heading says: Typology/plans, bunker elements, construction assembly types, and construction categories,
the site is very extensive. I just surfed the bunker elements page, and is very detailed, it comprehends: (english translation follows original webpage title for you to surf easily)
Chauffage : heating
Camouflage : camouplage
Codification : nomenclature
Citerne : water storage
Défense d'accès :accesss defense, interior and exterior
Elements divers : miscelaneous alements
Front Todt :Todt shell deflector
Inscriptions . inscriptions (slogans, instructions, etc)
Orifice pour périscope : periscope holes
Plaques de blindage : armoured gun mounts
Portes : doors
Puits d'antenne : antenae mounts
Sortie de secours emergency exits (backdoors)
Téléphones : phone systems
Ventilation : filtration, ventilation
Very well detailed with pictures for references in most cases.
Xavier
Instandsetzungtruppfuhrer