PUBLIC LAWS-CH. 343-JULY 26, 1947 Naval aviation. Responsibility of Navy. U. S . Marine Corps. Additional duties. Restriction. All naval aviation shall be integrated with the naval service as part thereof within the Department of the Navy. Naval aviation shall consist of combat and service and training forces, and shall include land-based naval aviation, air transport essential for naval operations, all air weapons and air techniques involved in the operations and activities of the United States Navy, and the entire remainder of the aeronautical organization of the United States Navy, together with the personnel necessary therefor. The Navy shall be generally responsible for naval reconnaissance, antisubmarine warfare, and protection of shipping. The Navy shall develop aircraft, weapons, tactics, technique, organ- ization and equipment of naval combat and service elements; matters of joint concern as to these functions shall be coordinated between the Army, the Air Force, and the Navy. (c) The United States Marine Corps, within the Department of the Navy, shall include land combat and service forces and such aviation as may be organic therein. The Marine Corps shall be organized, trained, and equipped to provide fleet marine forces of combined arms, together with supporting air components, for service with the fleet in the seizure or defense of advanced naval bases and for the conduct of such land operations as may be essential to the prosecution of a naval campaign. It shall be the duty of the Marine Corps to develop, in coordination with the Army and the Air Force, those phases of amphibious operations which pertain to the tactics, technique, and equipment employed by landing forces. In addition, the Marine Corps shall provide detachments and organizations for service on armed vessels of the Navy, shall provide security detach- ments for the protection of naval property at naval stations and bases, and shall perform such other duties as the President may direct:' Provided, That such additional duties shall not detract from or inter- fere with the operations for which the Marine Corps is primarily organized. The Marine Corps shall be responsible, in accordance with integrated joint mobilization plans, for the expansion of peace- time components of the Marine Corps to meet the needs of war. DEPARTMENT OF THE AIR FORCE cretarY of the Ar SEC. 207. (a) Within the National Military Establishment there is hereby established an executive department to be known as the Depart- ment of the Air Force, and a Secretary of the Air Force, who shall be the head thereof. The Secretary of the Air Force shall be appointed from civilian life by the President, by and with the advice and consent of the Senate. 5U.B. . C. (b) Section 158 of the Revised Statutes is amended to include the Department of the Air Force and the provisions of so much of title IV 5U. .C. ci eteq. of the Revised Statutes as now or hereafter amended as is not incon- sistent with this Act shall be applicable to the Department of the "Department of the Air Force. Air Force." (C) The term "Department of the Air Force" as used in this Act shall be construed to mean the Department of the Air Force at the seat of government and all field headquarters, forces, reserve com- ponents, installations, activities, and functions under the control or Under Sereysupervision of the Department of the Air Force. Assistant ecretares (d) There shall be in the Department of the Air Force an Under Secretary of the Air Force and two Assistant Secretaries of the Air Force, who shall be appointed from civilian life by the President by and with the advice and consent of the Senate. (e) The several officers of the Department of the Air Force shall perform such functions as the Secretary of the Air Force may prescribe. 502 [61 STAT.