Army Council Instruction 1410 of 16th July 1916
Badges for Bombers
1. With reference to AO's 402 & 403 of 1915 & ACI 407 of 1916, the badge approved for Regimental & Battalion Bombers will be worn by all Officer Instructors and NCO Instructors employed at a Command or Army Bombing School, but only for the duration of such employment.
2. This badge is not to be worn by any officer or other rank, even though trained as a bomber, of a Reserve unit. The units for which this badge is authorized are given in AO 403 of 1915.