In WW2, there was only 1 glider mission that flew behind enemy lines. Which mission was it, and where could I learn more about it?

by HORSEthe

I learned this at my grandfathers funeral today (he was on the mission) and I tried googling it but the results were too broad for me to narrow it down.

Thanks in advance and if I got the story wrong, I'd like to know.

thefourthmaninaboat

Which country's military did your grandfather serve in, and when? Assuming this is WWII, most glider landings took place 'behind enemy lines', from the German use of gliders in Belgium and Crete, to the Allied use of them in Normandy and the Netherlands.