 Nyorai kupfuurira kweiyi ndima - Muna January 1943 paCasablanca Conference, Vakuru veMasoja Vakabatana vakabvumirana kutanga Combined Bomber OffensiveCBO munaJune uye yakaratidza zvinangwa zvakakosha. Zvichibva pazvinokosha izvi asi nokuchinja kumwe, British Air Ministry yakabudisa mutemo weCasablanca musi wa4 February, uchinanga mauto eGermany, maindasitiri eGermany nemagadziriro ezveupfumi, uye tsika dzeGermany. More methodically, USAAF General Ira C. Eaker akaunganidza Anglo-American kuronga chikwata kutora COA kuti mazita zvinangwa uye kuronga navo zvikabatanidzwa bhomba kuvhiyiwa. Iri boka risina zita, dzimwe nguva rainzi CBO Planning Team, raitungamirirwa naHansell uye raisanganisira pakati pevamwe USAAF Brigadier General Franklin Anderson uye RAF Air Commodore Sidney Osborne Bufton. Yakapedzwa muna April 1943, hurongwa hwacho hwakakurudzira kuti paitwe mabasa 18 mumwedzi mitatu yokurwisa zvinangwa zvinenge 76. Kurwisa kweBhomba Kwakabatanidzwa kwakatanga musi wa10 Chikumi 1943. 