The Volturno Line (also known as the Viktor Line) was a German defensive position in Italy during the World War II. The line ran from Termoli in the east, along the Biferno River through the Apennine Mountains to the Volturno River in the west. Following the Allied invasion of Italy the German forces set up a series of defensive lines across Italy, intended to delay the Allied advance. The Volturno Line was the southernmost of these.