The timeline below features some of the key events of d-day, the greatest amphibious landing in history. D-day initially set for june 5, d-day was delayed due to poor weather. Paratroopers began landing after midnight, followed by a massive naval and aerial bombardment at 6:30 a. m. American forces faced severe resistance at omaha and utah. With a small window of opportunity in the weather, eisenhower decided to go—d-day would be. The allies invade europe in may 1944, the western allies were finally prepared to deliver their greatest blow of the war, the long-delayed, cross-channel invasion of northern france, code-named overlord. Over-the-shore logistics of d-day within 48 hours of the amphibious assault, over 130,000 gis and some 17,000 vehicles came ashore. With more troops and equipment arriving daily, the amount of supplies required to support this force grew exponentially. D-day timeline on , western allied forces launched operation overlord, the massive allied invasion of normandy, france, to liberate nazi-occupied europe. Dedicated in 2000 as the national d-day museum and now designated by congress as america’s national wwii museum, the institution celebrates the american spirit, teamwork, optimism, courage and sacrifices of the men and women who fought on the battlefront and served on the home front.