In WWII in Germany there was the Siegreid Line; in France the Maginot Line, in Finland the Mannerheim Line, but in which other European Country was the Gustav Line?
Maginot Line Line along the Italian border, which "demonstrated the effectiveness of the fortifications ... when properly employed." Footnotes Books Journals Maginot Line The Maginot Line (, ), named after the French Minister of War André Maginot, was a line of concrete fortifications, obstacles, and weapon installations built by France in the 1930s to deter invasion by Germany and force them to move around the fortifications. Constructed on the French side of its borders with Italy, Switzerland, Germany, and Luxembourg, the line did not extend to the English Channel due to French strategy that envisioned a move into Belgium to counter a
Mannerheim Line that the Mannerheim Line was stronger than the Maginot Line. The Finns aimed to make its defence line impregnable, but in comparison with the Maginot Line, it was thin. The Finns had funds and resources for only 101 concrete bunkers; the equivalent length of the Maginot Line had 5,800 of these structures, with railway connections between them. The weakness of the line is illustrated by the fact that the amount of concrete used in the whole Mannerheim Line—14,520 cubic meters or —is slightly less than the amount used in the Helsinki Opera House (15,500 cubic meters or 547,000 cubic feet).