Forgotten for the past 60 years, this German artillery battery was nevertheless an integral part of a military zone. It opened fire on the liberating troops, covering the beaches of Utah and Omaha. The final assault by the 5th and 2nd US Rangers, on the 9th of June 1944, lasted 5 long hours. Today, you can still visit around 2 miles of trenches, tunnels, emplacements for six 155m guns and other subterranean galleries and constructions.