War Department

Office of the Chief of Staff

Washington 25, D.C.

25 July 1945



TO:         General Carl Spaatz

                Commanding General

                United States Army Strategic Air Force



1. The 509 Composite Group, 20th Air Force will deliver the first special bomb as soon as weather will permit visual bombing after 3 August 1945 on one of the targets Hiroshima, Kokura, Niigata and Nagasaki. To carry military and civilian scientific personnel from the War Department to observe and record the effects of the explosion of the bomb, additional aircraft will accompany the airplane carrying the bomb. The observing planes will stay several miles distance from the point of impact of the bomb.


2. Additional bombs will be delivered on the above targets as soon as made ready by the project staff. Further instructions will be issued concerning targets other than those listed above.


3. Dissemination of any and all information concerning the use of the weapon against Japan is reserved to the Secretary of War and the President of the United States. No communiqués on the subject or releases of information will be issued by Commanders in the field without specific prior authority. Any news stories will be sent to the War Department for special clearance.


4. The foregoing directive is issued to you by direction and with the approval of the Secretary of War and of the Cief of Staff, USA. It is desired that you personally deliver one copy of this directive to General MacArthur and one copy to Admiral Nimitz for their information.




General, G.S.C.

Acting Chief of Staff




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