In January 1943 at the Casablanca Conference, the Combined Chiefs of Staff agreed to begin the Combined Bomber Offensive (CBO) in June and set targeting priorities. Based on these priorities but with some changes, the British Air Ministry issued the Casablanca directive on 4 February, targeting the German military, German industrial and economic systems, and German morale. More methodically, USAAF General Ira C. Eaker assembled an Anglo-American planning team to take the COA's list of targets and schedule them for combined bomber operations. This unnamed group, sometimes called the CBO Planning Team, was led by Hansell and included among others USAAF Brigadier General Franklin Anderson and RAF Air Commodore Sidney Osborne Bufton. Finished in April 1943, the plan recommended 18 operations during each three-month phase against a total of 76 specific targets. The Combined Bomber Offensive began on 10 June 1943.