sentences:  In urgent need of additional fighters to support the forthcoming North African invasion, American planners decided to combine these two assets already in England and at the end of September 1942 a number of American pilots in the RAF were invited to transfer to the USAAF.Deployed from England to Port Lyautey Airfield, French Morocco, during the period 3 Jan to 28 February 1943.The Ground Echelon, finally joined each other at Oujda Airfield, French Morocco, a few days after their arrival in North Africa on 3 January 1943.