Hindenburg Line

Hindenburg Line (Siegfried-Stellung), a system of fortified and entrenched reserve positions stretching 80 km southeast from Arras to Soissons, France, built by the Germans in the winter of 1916-17. On 2-3 September 1918 the Canadian Corps broke open its northern hinge (the Drocourt-Quéant switch, or Wotan-Stellung) and compelled those German units west of the line to withdraw to it. At the end of the month another Canadian assault forced a crossing of the Canal du Nord, near Cambrai. Again outflanked, the Germans abandoned the line and continued their retreat to the east.