they would exchange friendly gestures as a sign of harmony. This would soon change as pilots began arming themselves with pistols and rifles to attack other aircrafts. This Reconnaissance pilots had shown some usefulness to each side in the war. Soon European powers realized that the other side was receiving information due to the aircrafts, and something had to be done to prevent it. Airplanes were being mounted with heavy machine guns to take down the reconnaissance planes. These new types of
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