How did German machine guns and artillery cover Omaha Beach?

The German defense of Omaha Beach was designed to create a "killing zone" by utilizing the terrain and a network of fortified positions.1

Defensive Strategy and Firepower

The German 352nd Infantry Division established 13 strongpoints, known as Widerstandsnester ("resistance nests"), along the coast. These positions were supported by an extensive trench system and integrated into the natural geography of the bluffs, which rose 30 to 50 meters (100–170 feet) above the beach.12

• Machine Gun Fire: German weapons were specifically positioned to cover the beach with grazing enfilade fire, allowing them to sweep across the sand and shingle with high-volume, horizontal fire.1
• Artillery and Plunging Fire: In addition to direct fire, the Germans utilized the high cliffs to deliver plunging fire onto the landing troops. Furthermore, German spotters located on the heights—including the elevated vantage point of Pointe du Hoc—called in artillery fire from positions further inland to strike the beach and landing craft.13

These defenses were complemented by heavily mined waters and a variety of beach obstacles, such as steel hedgehogs and log ramps, which forced landing craft to stall and left troops exposed to the concentrated fire from the heights.132