. . "Combined Bomber Offensive"@en . "(alias:) Allied Bomber offensive"@en . "1943-06-10Z"^^ . . . "Disputed" . . . . "*" . "The Combined Bomber Offensive (CBO) was an Anglo-American offensive of strategic bombing during World War II in Europe. The primary portion of the CBO was against Luftwaffe targets which was the highest priority from June 1943 to 1 April 1944. The subsequent highest priority campaigns were against V-weapon installations (June 1944) and petroleum, oil, and lubrication (POL) plants (September 1944)."@en .