You are now listening to World War 2 Stories. I'm your host Steve Matthews. Today, we delve into one of the most remarkable yet least-known rescue operations of the Second World War—a mission so politically sensitive that it remained classified for decades after the war ended. This is the story of Operation Halyard, an extraordinary behind-enemy-lines rescue that saved over 500 Allied airmen with the help of Serbian villagers and resistance fighters who risked everything to protect strangers from a distant land.

Imagine yourself as an American airman in 1944, your B-24 Liberator bomber riddled with flak and falling from the sky over Nazi-occupied Yugoslavia. If you survive the parachute jump, you find yourself in a foreign land, unable to speak the language, hunted by German troops, with almost no chance of getting home. Now imagine the astonishment when local villagers—people who had every reason to turn you in to avoid brutal reprisals—instead welcome you into their homes, hide you from the enemy, and share their meager wartime rations to keep you alive.

This was the experience of hundreds of Allied airmen shot down over Serbia during the strategic bombing campaign against Hitler's oil refineries in Romania. Their unlikely salvation came through Operation Halyard, a daring rescue mission that represents one of the greatest untold stories of World War II.