NEW book from the author of the bestseller “Stalin’s Line” in battle.” The true history of all the fortified areas and defensive zones of the Second World War and the fighting during their breakthrough. The Mannerheim Line and the Maginot Line, the Molotov Line and the Eastern Wall, the Stalin Line and the Siegfried Line, Soviet and Japanese fortified areas in the Far East, etc., etc. p. - in this book you will find comprehensive information about all the “Chinese walls of the 20th century” and a professional analysis of their effectiveness. Why in 1939–1945. the “positional impasse” of the First World War was not repeated? Is it possible in principle to create an “insurmountable” line of defense? Are the colossal costs of building fortified areas justified? And how exactly did the assault groups manage to break through the most powerful defensive systems?