History: Two German soldiers look into trench periscopes (1916-1918) [1024x1024]

https://i.redd.it/8yrkxw9pdsw11.jpg via /r/HistoryPorn https://www.reddit.com/r/HistoryPorn/comments/9ut63x/two_german_soldiers_look_into_trench_periscopes/?utm_source=ifttt