D Day / Normandy Landings

On June 6, 1944, Allied troops descended upon a 50-mile stretch of fortified beach in Normandy, France. In order to weaken Hitler's grasp on France, Canadian, British and American soldiers invaded the coast by air, water and land. Upon stepping onto the beaches, these soldiers were met with German fire power perched atop higher vantage points. In addition, the beaches were heavily mined and had numerous obstacles placed throughout. 

Although not entirely successful, this operation saw the beginnings of Allied victory, and it also led to the liberation of France from the German Reich. Allied casualties were estimated to approximately 10,000 soldiers, meanwhile the Axis powers numbered to around 1,000 deaths. Today, this event is heavily commemorated throughout the world, and in particular in the beaches of Normandy, which have seen a secular consecration of the grounds. To this day, some of the obstacles that greeted the Allied men in 1944, still remain. 

The term "D Day" is in fact a military term which saw its employment prior to the events of the Normandy Landings. It is used to designate the day on which an attack or military operation is to be implemented. By World War II, The United States military had made ample use of the term, and would continue to do so for many years to come.