History: German soldiers wearing gas masks in the Battle of Verdun. (1916) [607-400]

https://i.redd.it/xz77ls0aokh21.png via /r/HistoryPorn https://www.reddit.com/r/HistoryPorn/comments/asdy2a/german_soldiers_wearing_gas_masks_in_the_battle/?utm_source=ifttt