Retaliatory fire should be prompt and authority to order fire should be shared by all artillery officers, rather than relying on unreliable communications to request authority to fire on targets as they were observed. Bornemann recommended that if a British artillery battery was detected, it should be engaged with immediately. Co-operation with artillery observers in aircraft and balloons should be improved, with at least one target selected for bombardment in every aircraft sortie, for which the artillery commanders should draw up gridded drawings of targets within range. When British aircraft were overhead, battery positions should cease fire to remain hidden and German aircraft units should be contacted to drive the British away. Bornemann suggested that artillery group commanders should have control of all artillery ammunition allotted to the group and that artillery regimental headquarters should be responsible for replacing stocks and passing on demands for more ammunition to higher headquarters.