World War I: An austrian Armoured train in Russia. Hand-colored lantern slide. Around 1915 [Getty Images]

AUSTRIA - CIRCA 1915: World War I: An austrian Armoured train in Russia. Hand-colored lantern slide. Around 1915 (Photo by Oesterreichsches Volkshochschularchiv/Imagno/Getty Images)

Hulton Archive Imagno