Hello,
if anybody is interested, I have started a summary thread on the tank-net about the Czechoslovakian fortified line built prior to the Munich affair.
The thread (so far) contains information on weapons of the fortifications, and on construction and tactical employemnt of light fortifications.
Heavy fortifications, artillery forts and obstacles are yet to come.
The thread can be found here:
http://63.99.108.76/forums/index.php?showtopic=21933
Enjoy!