; or (F) not allocated. 905. Assistant Secretary of Defense for Strategy, Plans, Assessments, Readiness, and Capabilities (a) In general Section 138(b) of title 10, United States Code, is amended by adding at the end the following new paragraph: (5) (A) One of the Assistant Secretaries is the Assistant Secretary of Defense for Strategy, Plans, Assessments, Readiness and Capabilities. (B) The principal duty of the Assistant Secretary shall be to support the Secretary of Defense in developing the National Defense Strategy (as required by section 113 of this title) and related policy guidance for the campaign and contingency plans, force development and defense posture priorities, and readiness objectives required to execute the Strategy. (C) Subject to the authority, direction, and control of the Secretary and the Under Secretary of Defense for Policy, the Assistant Secretary shall be responsible for the following: (i) In matters relating to strategy and force planning, the following: (I) Supporting the Secretary and the Under Secretary in preparing the National Defense Strategy. (II) Producing policy guidance to direct the formulation of program and budget requests by the military departments and other elements of the Department, including the Defense Planning Guidance as required by section 113 of this title, and review such program and budget requests. (III) Proposing alternative force sizes and structures, joint capabilities and concepts, and roles and missions for the armed forces to inform the development of annual program and budget requests. (ii) In matters relating to plans and force posture, the following: (I) Supporting the Secretary and the Under Secretary in producing policy guidance to inform the development of campaign and contingency plans by the commanders of the combatant commands, including the Contingency Planning Guidance for Employment of the Force and the Global Defense Posture Report as required by section 113 of this title, and reviewing such plans. (II) Advising the Secretary and the Under