William D. Leahy
The CCS charter was approved by President Roosevelt 21 April 1942. The American members of the CCS were General George C. Marshall, the United States Army chief of staff, the Chief of Naval Operations, Admiral Harold R. Stark (replaced early in 1942 by Admiral Ernest J. King); and the Chief (later Commanding General) of the Army Air Forces, Lt. Gen. Henry H. Arnold. In July 1942 a fourth member was added, the President's personal Chief of Staff, Admiral William D. Leahy.