formed in May 1943 as the Office of War Mobilization. War Production Board under Chairmen Nelson and King, formed in January 1942 from the Office of Production Management and the Supply Priorities and Allocations Board. Economic Stabilization Board under Chairmen Byrnes and Vinson, formed in October 1942 as the Office of Economic Stabilization. War Manpower Commission under Chairman McNuff, formed in April 1942. United States Maritime Commission under Chairman Land. War Shipping Administration under Administrator Land, formed in February 1942. Office of Defense Transportation under Chairman Eastman, formed in December 1941. Petroleum Administration for War under Administrator Ickes, formed in December 1942. War Food Administration formed in December 1942. National War Labor Board under Chairman Davis, formed in January 1942. Office of Scientific Research and Development under Chairman Bush, formed in July 1941. Office of War Information under Chairman Davis, formed in June 1942. Office of Civilian Defense under Chairmen LaGuardia and Landis, formed in May 1941. Joint Chiefs of Staff The Joint Chiefs were military officers, as opposed to the above, who were for the most part civilians. Chairman of the Joint Chiefs of Staff William D. Leahy Army Commander-in-Chief and Chief of Staff George C. Marshall Navy Commander-in-Chief and Chief of Operations Ernest King Army Air Force Commander Henry Arnold Marine Corps Commandant Alexander Vandegrift Army Air Force Chief of Staff Giles Army Ground Forces Commander Lear Army Service Forces Commander Somervell In addition, the following offices reported to the Joint Chiefs of Staff: Operations Division, formerly the War Plans Division. Military Intelligence Division Office of Naval Intelligence Politics of World War II United States home front during World War II Politics of the United States