▁war ▁in ▁September ▁ 1 9 3 9 , ▁he ▁led ▁this ▁unit ▁in ▁the ▁invasion ▁of ▁Poland , ▁then ▁after ward ▁took ▁up ▁an ▁administrative ▁post ▁for ▁a ▁short ▁term , ▁in ▁the ▁headquarters ▁of ▁Luft fl otte ▁ 2 . ▁ ▁On ▁ 1 5 ▁December ▁ 1 9 3 9 , ▁Sch ell mann ▁was ▁appointed ▁commander ▁the ▁newly ▁formed ▁II ./ J ag d gesch w ader ▁ 2 ▁( J G ▁ 2 — 2 nd ▁F ighter ▁Wing ). ▁During ▁the ▁Battle ▁of ▁Britain , ▁on ▁ 3 ▁September ▁he ▁was ▁promoted ▁to ▁commander ▁of ▁J G ▁ 2 . ▁ ▁On ▁ 1 8 ▁September , ▁he ▁was ▁awarded ▁the ▁Knight ' s ▁Cross ▁of ▁the ▁Iron ▁Cross ▁for ▁his ▁ 2 3 ▁vict ories ▁( including ▁the ▁ 1 2 ▁in ▁Spain ). ▁The ▁presentation ▁was ▁made ▁by ▁G ör ing ▁at ▁the ▁headquarters ▁of ▁the ▁Netherlands , ▁General ▁der ▁Fl ie ger ▁( General ▁of ▁the ▁Fly ers ) ▁Friedrich ▁Christians en , ▁at ▁Wass ena ar ▁near ▁The ▁H ague ▁on ▁ 1 9 ▁September . ▁ ▁A ▁month ▁later ▁he ▁made ▁way ▁for ▁Hel mut ▁W ick ▁( at ▁the ▁time ▁in ▁a ▁ 3 - way ▁battle ▁with ▁Gall and ▁and ▁M öld ers , ▁as ▁top - sc oring ▁pilot ) ▁and ▁moved ▁to ▁take ▁command ▁of ▁J G ▁ 2 7 . ▁Prom oted ▁to ▁Major , ▁he ▁led ▁this ▁wing ▁during ▁the ▁invasion ▁of ▁the ▁B alk ans