German troops during a gas attack exercise, WW1, ~1915?
4h 57m ago by piefed.social/u/PugJesus in historyphotos@piefed.social from media.piefed.social
https://www.vrt.be/vrtnws/nl/2015/12/14/duitsers_zetten_dodelijkergasin-1-2523760/
This seems to be a photoshopped version of the photo on this page showing German soldiers during a training exercise.
Fuck me. Changed the title and photo.