World War II was claiming the lives of 10 million people a year worldwide by 1944. So the pressure for a successful D-Day was a matter of life or death.

Seventy years after the great Allied victory, Greta Van Susteren reveals the secrets behind the Invasion of Normandy. Fox News Reporting uncovers an unimaginable plan that the British concocted to trick Hitler about the time and place of D-Day. 

From London, Amy Kellogg investigates how 3D equipment and special aerial photographs helped save lives before "our boys" even hit the French beaches.

Meanwhile, Greg Palkot goes to Normandy to unlock the mystery behind one of the most powerful German batteries - captured by U.S. Army Rangers - that disappeared from the face of the earth.

Some of America’s bravest World War II veterans who survived the Invasion of Normandy sit down with Fox News to tell their stories of June 6, 1944.

Watch a few preview clips here and tune in Sunday at 10p/1a ET for a special hour as Fox News Reporting presents D-Day + 70: Secrets Revealed.