#16 German soldiers help a high-altitude observer remove his heavy clothes, 1915.

German soldiers help a high-altitude observer remove his heavy clothes, 1915.

Military Observation Balloons of WWI: Before Satellites And Drones, these Hot Air Balloons Were Used For Surveillance

#16 German soldiers help a high-altitude observer remove his heavy clothes, 1915.

WWI

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#15 A British soldier dresses the wounds of a German prisoner near Bernafay Wood. July 19, 1916.