Because of this failure, President Wilson determined that the OCSO was too overburdened by tasks to supervise effectively the Aviation Section and created a new subordinate organization, the Division of Military Aeronautics, on 24 April 1918, to assume all the functions and responsibilities for aviation. The DMA was removed from the Signal Corps altogether by executive order, under war powers granted to the president under the newly passed Overman Act, on 20 May 1918, reporting directly to the Secretary of War and effectively suspending the statutory duties of the Aviation Section. Four days later, on 24 May, both the DMA and the civilian-headed Bureau of Aircraft Production came under the aegis of a new organization, the Air Service, United States Army. The Aviation Section had been created by an act of Congress and was not formally disestablished until the passage of the National Defense Act of 1920, statutorily creating the Air Service.