events, First World War / WWI, propaganda, "Achtung! Feind hoert mit! Decknamen verwenden!" (Beware! The enemy is listening! Use assumed names!), poster, Germany, circa 1916,

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Additional-Rights-Clearances-NA

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Size: 3889px × 5022px
Location:
Photo credit: © INTERFOTO / History / Alamy / Afripics
License: Licensed
Model Released: No

Keywords: 1910s, 20th, achtung, big, century, ear, espionage, events, feind, french, historic, historical, hoert, hort, people, posters, propaganda, soldier, spying, war, world, wwi, ört