Austria-Hungarian soldiers with a typical sign of shell shock

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Austro-Hungarian soldiers somewhere in trench on Eastern front showing off their gas masks, WW1, circa 1915/1916 : r/TheGreatWarChannel

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American military observers attached to Austro-Hungarian army on Eastern front, 1914 : r/MilitaryHistory

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Entrenched Austro-Hungarian soldier posing for a photograph armed with revolver, gas-mask, bayonet and hand-granades in the Alps of the Italian front ca. 1916 (colorized) : r/austriahungary