==See also==* Siegfried Line==Notes====References====Sources==;Books;Theses==External links==* The German Retreat and the Battle of Arras, Imperial War Museum* Priestley, R. E. Breaking the Hindenburg line : the story of the 46th (North Midland) Division (1919)* An interpretation of the Bullecourt photograph.
* Линия Мажино* Линия Маннергейма* Линия Молотова* Атлантический вал* The Hindenburg Line: The Apotheosis of German Fortifications on the Western Front in the Great War* Sir Raymond Edward Priestley, Breaking the Hindenburg line : the story of the 46th (North Midland) Division / with an introduction by G. F. Boyd (1919)