Over 6,900 vessels, 156,000 troops, and nearly 200,000 naval personnel converged on a 50-mile stretch of French coastline on June 6, 1944. This episode looks past the familiar timelines to understand how Operation Neptune, the D-Day landings, overcame a logistical nightmare and heavily fortified defenses. We begin with the landing craft bottleneck, Admiral Ernest King’s allocation of only about 2,400 of more than 31,000 US landing craft to Europe, and why planners chose the broad front of Normandy over the shorter crossing to Calais.

We then explore Operation Fortitude, the phantom army under George Patton that kept German reserves waiting at Calais for weeks, and the weather gamble in which Group Captain James Stagg spotted a brief clearing while German forecasters predicted two weeks of storms, sending Erwin Rommel home for his wife’s birthday. From there we cover the incomplete Atlantic Wall, the paralyzing panzer debate between Rommel and Geyr von Schweppenburg, the scattered airborne drops, and the very different realities at Utah, Omaha, Gold, Juno, and Sword beaches.

• How the moon, tide, and dawn requirements left only about three viable days in June
• Why chaos among scattered paratroopers became an accidental weapon against German command
• Theodore Roosevelt Jr.’s decision to start the war from the wrong beach at Utah
• The disaster of duplex drive tanks at Omaha and the role of Hobart’s Funnies at Gold
• Why the Allies missed almost every day-one map objective yet won a decisive victory