▁reconna issance ▁aircraft ▁on ▁the ▁ 1 9 th . ▁Green ▁thus ▁became ▁the ▁only ▁pilot ▁to ▁become ▁an ▁ace ▁flying ▁the ▁B . E . ▁ 1 2 . ▁These ▁three ▁success es ▁earned ▁him ▁the ▁Dist ingu ished ▁Service ▁Order . ▁ ▁For ▁his ▁next ▁victory , ▁Green ▁borrow ed ▁a ▁Sp ad ▁f ighter ; ▁he ▁brought ▁down ▁an ▁Al bat ros ▁two - se ater ▁in ▁fl ames ▁with ▁it ▁on ▁ 1 3 ▁July ▁ 1 9 1 7 . ▁He ▁was ▁then ▁rot ated ▁home ▁to ▁England ▁ ▁to ▁command ▁a ▁Home ▁Def ence ▁unit , ▁ 4 4 ▁Squadron , ▁which ▁operated ▁S op with ▁Cam els ▁as ▁night ▁f igh ters . ▁Here ▁Green ▁ended ▁the ▁year ▁by ▁shooting ▁down ▁a ▁Goth a ▁G . IV ▁bom ber ▁pil oted ▁by ▁German ▁Ober le ut nant ▁Ger hard ▁Von ▁St ach el sky ▁on ▁ 1 8 ▁December ▁ 1 9 1 7 . ▁It ▁was ▁the ▁first ▁German ▁aer op lane ▁to ▁be ▁shot ▁down ▁at ▁night ▁over ▁Britain . ▁ ▁In ▁June ▁ 1 9 1 8 , ▁Green ▁took ▁command ▁of ▁ 1 5 1 ▁Squadron ▁and ▁led ▁it ▁to ▁France , ▁where ▁it ▁engaged ▁the ▁Germ ans ▁in ▁night ▁f ighter ▁operations . ▁Later ▁in ▁the ▁war , ▁he ▁moved ▁on ▁to ▁command ▁ 7 0 ▁Squadron ▁in ▁day light ▁combat . ▁ ▁Post war ▁career ▁Green ▁continued ▁serving ▁in ▁the ▁Royal ▁Air ▁Force ▁after ▁the ▁war . ▁On ▁ 1