ID Requested: Ettelbruck 1944 Stained Glass Window

Speaking of stained glass windows, we came across this beauty when we visited 80th division sites in 2011. The legend “Ettelbruck 1944” suggests this is some sort of commemorative about the battle, but I couldn’t find anything to document that. Does anyone know where and why and by whom this stand glass window was installed? If you know, write boba.editor@gmail.com and you’ll be identified as this month’s “Bulge Expert” in the next edition of the Bugle.. Thanks.