Japanese Special Naval Landing Force wearing gas masks and rubber gloves during a chemical attack near Chapei in the Battle of Shanghai. August-November 1937.

        Source:https://en.wikipedia.org/wiki/Chemical_warfare#/media/File:Japanese_Special_Naval_Landing_Forces_in_Battle_of_Shanghai_1937.jpg

Japanese Special Naval Landing Force wearing gas masks and rubber gloves during a chemical attack near Chapei in the Battle of Shanghai. August-November 1937.