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Squadron of Biplane Spectators

By The National Map Corps

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TNMCorps Recognition Badge 6000 Squadron of Biplane Spectators
Sources/Usage: Public Domain. View Media Details
World War I saw the first use and rapid development of airplane-based photographic reconnaissance. Proving to be more agile and reliable than balloons, pigeons, or rockets. Both sides of the conflict used aerial photographs to monitor the expansion of trenches and troop movements. From these activities during war time evolved the science of photogrammetry.

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