events, First World War / WWI, military postcards, "Sei stolz, dass du Deutscher bist." (Be proud to be a German), circa 1914 / 1915,

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Photo credit: © INTERFOTO / History / Alamy / Afripics
License: Licensed
Model Released: No

Keywords: 1910s, 20th, century, events, flag, historic, historical, holding, imperial, military, motto, people, postcards, propaganda, reichskriegsflagge, sei, slogan, soldier, stolz, war, world, wwi