 Ramba uchiverenga ndima ino - Muna 1940, Blumentritt - semukuru mukuru weOperations weArmy Group A zvakare pasi pavon Rundstedt - akabatanidzwa mukuronga navon Manstein naHenning von Tresckow uye kuurayiwa kwekupinda kweFrance. Chirongwa chaakabatsira kugadzira chainzi Sichelschnitt kana kuti Sickle Cut, uye chakazonzi Chirongwa chaManstein. Kubudirira kusingadzorwi kwakazotevera kweBlitzkrieg yeGermany muFrance nokuputsika kwakakwana kwokudzivirira kweFrance kwakakatyamadza kunyange vaGermany. Zvisinei, sezvo uto reGermany rakanga rava pedyo nekukunda kwakakwana, Blumentritt naRundstedt vakaregeredza mirairo inopesana yakabva kuOKH kuti vafambire mberi kunzvimbo dzeBritain neFrance paDunkirk, uye panzvimbo pezvo vakatevera murayiro waAdolf Hitler wokumira kwemazuva matatu, nokudaro vachibvumira kubviswa kwemauto eBritain. 