D-Day (AKA Day of Days) refers to a day of devastation or completion of something long anticipated. Historically, D-Day refers to Tuesday, June 6, 1944 during WWII when Allied forces landed in Normandy, FR. The largest amphibious invasion operation in world history, over 160k troops landed in a single day and 195,700 Allied naval and merchant navy personnel in over 5,000 ships were also involved. Falls on June 6th. In 2011, it is on Monday, June 6 and for 2012 on Wednesday, June 6.
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Amphibious warfare is a type of offensive military operation which uses naval ships to project ground and air military power onto a hostile or potentially hostile shore. Through history the operations were conducted using ship's boats as the primary method of delivering troops to shore. Since the Gallipoli Campaign specialised watercraft were increasingly designed for landing troops, materiel and vehicles, including by landing craft and for insertion of commandos, by fast patrol boats, zodiacs (rigid inflatable boats) and from mini-submersibles.
The term amphibious first emerged in the USA during the 1930s after design of the Landing Vehicle Tracked where the first prototypes were named Alligator and Crocodile, though neither species are amphibian. Amphibious warfare includes operations defined by their type, purpose, scale and means of execution. In the British Empire at the time these were called combined operations which were defined as "...operations where naval, military or air forces in any combination are co-operating with each other, working independently under their respective commanders, but with a common strategic object." All armed forces that employ troops with special training and equipment for conducting landings from naval vessels to shore agree to this definition.
The Normandy landings, codenamed Operation Neptune, were the landing operations of the Allied invasion of Normandy, in Operation Overlord, during World War II. The landings commenced on Tuesday, 6 June 1944 (D-Day), beginning at 6:30 am British Double Summer Time (GMT+2). In planning, as for most Allied operations, the term D-Day was used for the day of the actual landing, which was dependent on final approval.
The landings were conducted in two phases: an airborne assault landing of 24,000 British, American and Canadian airborne troops shortly after midnight, and an amphibious landing of Allied infantry and armoured divisions on the coast of France starting at 6:30 am. Surprise was achieved thanks to inclement weather and a comprehensive deception plan implemented in the months before the landings, codenamed Operation Bodyguard, to distract German attention from the possibility of landings in Normandy. A key success was to convince Adolf Hitler that the landings would actually occur to the north at the Pas-de-Calais. There were also decoy operations taking place simultaneously with the landings under the codenames Operation Glimmer and Operation Taxable to distract the German forces from the real landing areas. War Conflict