History: Japanese soldiers wearing gas masks during the 1937 Battle of Shanghai in the Second Sino-Japanese War [780 x 621].

https://i.redd.it/13kd9dz11f841.jpg via /r/HistoryPorn https://www.reddit.com/r/HistoryPorn/comments/ej2qdl/japanese_soldiers_wearing_gas_masks_during_the/?utm_source=ifttt