How were airplanes used in the WW1

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Explanation:

The first use of airplanes in World War I was for reconnaissance. The airplanes would fly above the battlefield and determine the enemy's movements and position. One of the first major contributions of airplanes in the war was at the First Battle of the Marne where Allied reconnaissance planes spotted a gap in the German lines.

At the start of the First World War, aircraft like the B.E. 2 were primarily used for reconnaissance. Due to the static nature of trench warfare, aircraft were the only means of gathering information beyond enemy trenches, so they were essential for discovering where the enemy was based and what they were doing.

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