Parachutists jumping from World War II-era planes hurled themselves Sunday into now peaceful Normandy skies where war once raged, heralding a week of ceremonies for the fast-disappearing generation of Allied troops who fought from D-Day beaches 80 years ago to Adolf Hitler’s fall, helping free Europe of his tyranny.

All along the Normandy coastline — where then-young soldiers from across the United States, Britain, Canada and other Allied nations waded ashore through hails of fire on five beaches on June 6, 1944 — French officials, grateful Normandy survivors and other admirers are saying “merci” but also goodbye.

The ever-dwindling number of veterans in their late nineties and older who are coming back to remember fallen friends and their history-changing exploits are the last.