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apr 6, 1917 - Apr. 6, 1917
Description:
The U.S. enters the Great War. Observation balloons are used alongside the latest heavier than air-aircraft.
Added to timeline:
Historical Timeline of the U.S. Army Air Forces
By
Player 72
27 Jan 2020
0
0
319
Date:
apr 6, 1917
Now
~ 108 years ago
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