I have a daily look at www.theminiaturespage.com. This is a site primarily for modellers and wargamers but an occasional history question is asked.
Someone has posted "The Maginot Line - was it ineffective?". There has been a huge response - 43 postings - from the knee-jerk hindsight answers to the very considered answers. This appeals to both of my main history interests, in fortifications and in French history. After many years of reading and thinking about this, my conclusion is that the Maginot Line was very successful, it was not breached and it kept the Germans from crossing the Rhine. There are several reasons for the defeat of the Allies in 1940, a lack of understanding of blitzkrieg, of tank to tank action, of combines forces offensives, a lack of communication and control. At the core of these factors is a complete misunderstanding of modern warfare by all the Allies' command structures. If anyone would like to enter constructive dialogue about this, I would be extremely pleased to hear from you.
If you would like to see the responses, go the the TMP website, enter "Zones of Interest" - "Historical" - "World War 2 Land" then scroll down the Message Boards to the posting.