A pillbox constructed of durable materials provides
excellent protection, and at the
beginning of the war, the Germans were leading the world in the construction of hardened fortifications.
In Germany, a large number of bunkers were used to strengthen the "Siegfried Line" – a well-established system of fortifications spanning western Germany, at a length of about 630 km. Curiously, the Germans never used that name, instead referring to this line as the "West Wall". The various sections of this defensive wall were named in honor of the old Germanic gods and heroes, Siegfried among them. About 588 different bunkers and fortifications were built along the West Wall. These bunkers mostly housed small arms and machine guns, but they protected the infantry inside from impacts of 150mm projectiles.