Kammala wannan jumlar: An kunna rukunin jirgin sama na rukuni a Ingila a karkashin Rundunar Sojan Sama ta Takwas. An sanye shi da nau'ikan fitarwa na P-39 Airacobra wanda aka yi oda da shi don Sojan Sama na Faransa a farkon 1940 wanda aka karkatar da shi zuwa Ingila bayan Faduwar Faransa. A Ingila, P-39s sun kasance a cikin ajiya a cikin akwatunan da suka isa. A lokacin rani na 1942, adadin matukan jirgin sama na Amurka da suka ba da kansu a cikin Royal Air Force da ke aiki a Ingila ya karu zuwa ɗaruruwan kaɗan. Ana bukatar karin mayakan gaggawa don tallafawa masu zuwa
Bayan mamayewar Arewacin Afirka, masu shirya shirin Amurka sun yanke shawarar hada wadannan kadarorin guda biyu da ke Ingila kuma a karshen watan Satumbar 1942 an gayyaci wasu matukan jirgin Amurka a RAF don canzawa zuwa USAAF.