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A special study was being made in 1914 of the best methods of ensuring clear observation of the ground, and partly in this connection staggered planes were introduced, culminating in the B.E.2c's, which were not, however, available for service in any numbers until 1915.
During that year a Home Defence Squadron of B.E.2c's, rapidly expanded to a Wing, was formed; and the systematic training of night pilots, the standardization of night-flying equipment and armament, and the lighting of aerodromes, was taken in hand.