"ENEMY AERODROME ACTIVE" - A watching F.E. hovers above the enemy aerodrome. Landing lights and other signs of activity appear. The Observer signals back by his C. W. to his own aerodrome, the code signal meaning "Enemy Aerodrome Active." This will bring out a bomb-laden flight of machines to raid the Hun aerodrome, probably in time to prevent the departure of the town-raiding Gothas; failing which, to destroy buildings and hangars, making the return of the enemy machines difficult or even impossible.
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