Omaha Beach was one of five beach landing sectors of the amphibious assault component of Operation Overlord during the Second World War. On June 6, 1944, the Allies invaded German-occupied France with the Normandy landings. "Omaha" refers to an 8-kilometer (5 mi) section of the coast of Normandy, France, facing the English Channel, from east of Sainte-Honorine-des-Pertes to west of Vierville-sur-Mer on the right bank of the Douve river estuary.
https://en.wikipedia.org/wiki/Omaha_Beach