Sainte-Mère Eglise, Pegasus Bridge, the battery of Merville ...: these names entered the legend of D-Day and the epic of June 6, 1944. Well-known, these events receive a new light with the work of Benoît Rondeau . While these fights are generally studied in separate works, the author discusses here all the airborne operations conducted on June 5 and 6, 1944, whether American, British or French. Benoît Rondeau is also anxious to present a living account of the facts, multiplying stories and anecdotes. Material and uniforms are also presented. Distinguishing himself from many previous works, he insists particularly on the preparation of the D-Day and the development of the airborne missions of Operation Overlord. How were the men prepared? How were the objectives chosen? What are the requirements for any airborne operation? Benoît Rondeau answers all these questions that are rarely discussed. The author ends his study by taking stock of the action of the 6th, 82nd, 101st Airborne Divisions. A welcome synthesis that illuminates a major episode of "D-Day".