- engine ▁aircraft , ▁on ▁ 1 2 ▁May ▁ 1 9 3 9 . ▁While ▁converting ▁to ▁the ▁B f   1 1 0 , ▁L ent ▁did ▁not ▁have ▁a ▁regular ▁wireless ▁operator ▁( F unker ) ▁in ▁the ▁rear ▁gun ner ' s ▁seat , ▁but ▁on ▁ 1 4 ▁August ▁ 1 9 3 9 ▁he ▁was ▁accompanied ▁in ▁M 8 + A H ▁for ▁the ▁first ▁time ▁by ▁Gef re iter ▁Walter ▁Kub isch . ▁During ▁the ▁pre l ude ▁of ▁World ▁War   II ▁on ▁ 2 5 ▁August ▁ 1 9 3 9 ▁I ./ Z G   7 6 ▁deployed ▁to ▁an ▁air field ▁at ▁Oh lau ▁to ▁the ▁sout heast ▁of ▁Bres lau . ▁ ▁World ▁War ▁II ▁World ▁War ▁II ▁began ▁at ▁ 0 4 : 4 5 ▁on ▁Friday ▁ 1 ▁September ▁ 1 9 3 9 ▁when ▁German ▁forces ▁crossed ▁the ▁Polish ▁border . ▁Hel mut ▁L ent , ▁flying ▁a ▁B f   1 1 0 ▁marked ▁M 8 - D H , ▁took ▁off ▁from ▁Oh lau , ▁at ▁ 0 4 : 4 4 ▁to ▁esc ort ▁He inkel ▁He ▁ 1 1 1 ▁bom bers ▁on ▁a ▁mission ▁over ▁Krak ow . ▁ ▁In vas ion ▁of ▁Poland ▁ ▁The ▁German ▁plans ▁for ▁the ▁invasion ▁of ▁Poland ▁were ▁conce ived ▁under ▁the ▁cod ename ▁Fall ▁We iss ▁( Case ▁White ). ▁This ▁operation ▁called ▁for ▁simultane ous ▁attacks ▁on ▁Poland ▁from ▁three ▁directions , ▁the ▁north ,