From 1930 until 1936 , the competition was confined to night bombing squadrons in home commands .
Was then in abeyance until revived in 1949 , when competition was awarded to the Bomber Command squadron showing the best all - round excellence in training throughout the year .
From 1930 until 1936 , the competition was confined to night bombing squadrons in home commands , and was then in abeyance until revived in 1949 , when it was awarded to the Bomber Command squadron showing the best all - round excellence in training throughout the year .