▁T AC AN , ▁in ert ial ▁navigation ▁system , ▁G PS , ▁and ▁G N SS ▁in ▁aircraft . ▁The ▁addition ▁of ▁greatly ▁improved ▁landing ▁and ▁navigation ▁equipment ▁combined ▁with ▁rad ar ▁led ▁to ▁the ▁use ▁of ▁the ▁term ▁all - we ather ▁f ighter ▁or ▁all - we ather ▁f ighter ▁attack , ▁depending ▁on ▁the ▁aircraft ▁capabilities . ▁The ▁use ▁of ▁the ▁term ▁night ▁f ighter ▁gradually ▁f aded ▁away ▁as ▁a ▁result ▁of ▁these ▁improvements ▁making ▁the ▁vast ▁majority ▁of ▁f igh ters ▁capable ▁of ▁night ▁operation . ▁ ▁History ▁ ▁Early ▁examples ▁ ▁At ▁the ▁start ▁of ▁World ▁War ▁I , ▁most ▁combat ants ▁had ▁little ▁cap ability ▁of ▁flying ▁at ▁night , ▁and ▁little ▁need ▁to ▁do ▁so . ▁The ▁only ▁targets ▁that ▁could ▁be ▁attacked ▁with ▁any ▁possibility ▁of ▁being ▁hit ▁in ▁limited ▁visibility ▁would ▁be ▁cities , ▁an ▁un th ink able ▁target ▁at ▁the ▁time . ▁The ▁general ▁assumption ▁of ▁a ▁quick ▁war ▁meant ▁ ▁no ▁need ▁existed ▁for ▁strateg ic ▁attacks . ▁ ▁Things ▁changed ▁on ▁ 2 2 ▁September ▁and ▁ 8 ▁October ▁ 1 9 1 4 , ▁when ▁the ▁Royal ▁Naval ▁Air ▁Service ▁bom bed ▁the ▁production ▁line ▁and ▁hang ars ▁of ▁the ▁Ze ppel in ▁facilities ▁in ▁C ologne ▁and ▁Düsseldorf . ▁ ▁Although ▁def ences ▁had ▁been ▁set ▁up , ▁all ▁of ▁them ▁proved ▁w oe fully ▁in ade qu ate . ▁As ▁early ▁as ▁ 1 9 1 5 , ▁a ▁number ▁of ▁B . E .