▁active ▁operations . ▁ ▁The ▁first ▁successful ▁test ▁launch ▁of ▁a ▁V - 2 ▁was ▁the ▁third ▁test ▁launch ▁on ▁ 3 ▁October ▁ 1 9 4 2 . ▁In ▁the ▁early ▁morning ▁of ▁ 7 ▁July ▁ 1 9 4 3 , ▁Dr . ▁Ernst ▁Stein hoff ▁fle w ▁von ▁Braun ▁and ▁Major - General ▁D orn berger ▁in ▁his ▁He inkel ▁He ▁ 1 1 1 ▁to ▁Hitler ' s ▁F ühr er haupt qu art ier ▁" W olf s sch anze " ▁headquarters ▁and ▁the ▁next ▁day ▁Hitler ▁viewed ▁the ▁film ▁of ▁the ▁successful ▁V - 2 ▁test ▁launch ▁( n arr ated ▁by ▁von ▁Braun ) ▁and ▁the ▁scale ▁models ▁of ▁the ▁W atten ▁b unker ▁and ▁launch ing - t ro op ▁vehicles : ▁ ▁In ▁January ▁ 1 9 4 4 , ▁D orn berger ▁was ▁named ▁Senior ▁Art illery ▁Commander ▁ 1 9 1 ▁and ▁was ▁head qu arter ed ▁at ▁Mais ons - L af itte ▁near ▁Saint ▁Germ ain , ▁and ▁in ▁December ▁ 1 9 4 4 , ▁D orn berger ▁was ▁given ▁complete ▁authority ▁for ▁anti - air craft ▁ro cket ▁development ▁( F lak ▁E ▁Flug ab wehr kan onen ent wicklung ). ▁On ▁ 1 2 ▁January ▁ 1 9 4 5 ▁on ▁D orn berger ' s ▁proposal , ▁Albert ▁Spe er ▁replaced ▁the ▁Long - Range ▁We ap ons ▁Commission ▁with ▁" Work ing ▁Staff ▁D orn berger ". ▁ ▁In ▁February ▁ 1 9 4 5