Remembering D-Day: Key facts about the invasion that altered WWII

The June 6, 1944, D-Day invasion of Nazi-occupied France was unprecedented in scale and audacity, using the largest-ever armada of ships, troops, planes and vehicles to punch a hole in Adolf Hitler’s defenses in western Europe and change the course of World War II.

With veterans and world dignitaries gathering in Normandy to commemorate the 80th anniversary of the landings, here’s a look at some details about how the operation unfolded.

Nearly 160,000 Allied troops landed in Normandy on June 6, 1944. Of those, 73,000 were from the United States and 83,000 from Britain and Canada. Forces from several other countries were also involved, including French troops fighting with Gen. Charles de Gaulle.

The Allies faced around 50,000 German forces.

More than 2 million Allied soldiers, sailors, pilots, medics and other people from a dozen countries were involved in the overall Operation Overlord, the battle to wrest western France from Nazi control that started on D-Day.