162 (e) There shall be not less than 10 officers of the Army National Guard of the United States and the Army Keserve on duty with the Army General Staff, one-half of whom shall be from each of those components. These officers shall be considered as additional members of the Army General Staff while on that duty. (f) The Chief of Staff shall— (1) send the statements of policies and regulations prepared under this section to the Secretary of the Army; (2) advise him with regard thereto; and (3) after action on those policies and regulations by the Secretary, act as the agent of the Secretary in carrying them into effect. § 3034. Chief of Staff: appointment; duties (a) The Chief of Staff shall be appointed by the President, by and with the advice and consent of the Senate, from the general officers of the Army. H e serves during the pleasure of the President, but not for more than four years unless reappointed by the President, by and with the advice and consent of the Senate. (b) The Chief of Staff, while so serving, has the grade of general without vacating his regular or reserve grade, and is counted as one of the officers authorized to serve in a grade above lieutenant general under section 3066 of this title. (c) Except as otherwise prescribed by law and subject to section 3012 (c) and (d) of this title, the Chief of Staff performs his duties under the direction of the Secretary of the Army, and is directly responsible to the Secretary for the efficiency of the Army, its preparedness for military operations, and plans therefor. (d) The Chief of Staff shall— (1) preside over the Army Staff; (2) send the plans and recommendations of the Army Staff to the Secretary, and advise him with regard thereto; (3) after approval of the plans or recommendations of the Army Staff by the Secretary, act as the agent of the Secretary in carrying them into effect; (4) supervise the members and organizations of the Army; (5) perform the duties described for him by sections 141 and 171 of this title and other provisions of law; and (6) perform such other military duties, not otherwise assigned by law, as are assigned to him by the President. § 3035. Vice Chief of Staff, Deputy Chiefs of Staff, and Assistant Chiefs of Staff: succession to duties of Chief of Staff (a) The Vice Chief of Staff, the Deputy Chiefs of Staff, and the Assistant Chiefs of Staff shall be general officers detailed to those positions. (b) If the Chief of Staff is absent or disabled or if that office is vacant, the officer who is highest on the following list and who is not absent or disabled shall, unless otherwise directed by the President, perform the duties of the Chief of Staff until a successor is appointed or the absence or disability ceases: (1) The Vice Chief of Staff. (2) The Deputy Chiefs of Staff in order of seniority.