 One of Walker 's tasks was to rewrite the bombardment text . He felt it was flawed because it failed to drive home what he saw as the most important fact , that " bombardment aviation is the basic arm of the air force " . Following the views of air power theorists Billy Mitchell , Hugh Trenchard , and Giulio Douhet , Walker enunciated two fundamental principles : that bombardment would take the form of daylight precision bombing ; and that it should be directed against critical industrial targets . In his article " Driving Home the Bombardment Attack " , published in the Coast Artillery Journal in October 1930 , he argued that fighters could not prevent a bombing attack and that " the most efficacious method of stopping a bombardment attack would appear to be an offensive against the bombardment airdrome . " The Bomber Mafia argued that bombers flew too high and too fast to be intercepted by fighters , that even if they were intercepted , the bombers had enough firepower to drive off their attackers , and enough armor and resilience to absorb any damage their attackers might attempt to inflict . The Air Corps Tactical School developed a doctrine that became known as industrial web theory , which called for precision attacks against carefully selected critical industrial targets . Walker drove home his belief in bombardment with a famous dictum from his lectures : " A well @-@ organized , well @-@ planned , and well @-@ flown air force attack will constitute an offensive that can not be stopped . " 
