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Rare photographs of military observation balloons of World War I, 1914-1918 - Rare Historical Photos
Photograph | WWI, German Observation Balloon | Science Source Images
PHOTO: German Military Observation Balloon in World War I (1915) | History.info
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German observation balloon, World War I - Stock Image - C017/7879 - Science Photo Library
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Rare photographs of military observation balloons of World War I, 1914-1918 - Rare Historical Photos
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Rare photographs of military observation balloons of World War I, 1914-1918 - Rare Historical Photos
WW1 Colourised Photos - Balloon troops from a (Feldluftschiffer) unit prepare to raise their Parseval-Sigsfeld 'Drachen' balloon. c.1916 In 1896 two German Officers, Parseval and Sigsfeld, designed a new type of balloon:
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