▁for ▁target ▁practice ▁on ▁the ▁ground . ▁In ▁ 1 9 1 6 ▁he ▁also ▁developed ▁( with ▁W . L . ▁French ) ▁the ▁increased ▁capacity ▁ 9 7 - round ▁' double ▁drum ' ▁for ▁the ▁Lewis ▁machine ▁gun . ▁It ▁was ▁issued ▁for ▁tri als ▁in ▁July ▁and ▁after ▁modifications ▁was ▁issued ▁generally ▁to ▁the ▁R FC ▁and ▁R N AS . ▁ ▁Victoria ▁Cross ▁ ▁Following ▁an ▁initial ▁air ▁victory ▁in ▁June , ▁on ▁ 2 5 ▁July ▁ 1 9 1 5 ▁when ▁on ▁pat rol ▁over ▁Pass ch end ae le , ▁Captain ▁Haw ker ▁attacked ▁three ▁German ▁aircraft ▁in ▁succession , ▁flying ▁a ▁different ▁Br istol ▁Sc out ▁C , ▁serial ▁No . ▁ 1 6 1 1 , ▁after ▁his ▁earlier ▁No . ▁ 1 6 0 9 ▁had ▁been ▁written ▁off , ▁trans plant ing ▁the ▁custom ▁Lewis ▁gun ▁mount ▁onto ▁No . ▁ 1 6 1 1 . ▁The ▁first ▁aer ial ▁victory ▁for ▁Haw ker ▁that ▁day ▁occurred ▁after ▁he ▁had ▁em pt ied ▁a ▁complete ▁drum ▁of ▁bul lets ▁from ▁his ▁aircraft ' s ▁single ▁Lewis ▁machine ▁gun ▁into ▁it , ▁went ▁spin ning ▁down . ▁The ▁second ▁was ▁driven ▁to ▁the ▁ground ▁dam aged , ▁and ▁the ▁third   – ▁an ▁Al bat ros ▁C . I ▁of ▁F FA ▁ 3   – ▁which ▁he ▁attacked ▁at ▁a ▁height ▁of ▁about ▁ 1 0 , 0 0 0 ▁feet , ▁burst ▁into ▁fl ames ▁and ▁crash ed . ▁(