General considers appropriate. F Studies and Reports 1061. Assessment of global force posture (a) Assessment required The Secretary of Defense shall, in consultation with the Chairman of the Joint Chiefs of Staff and the commanders of the combatant commands, provide for and oversee an assessment of the global force posture of the Armed Forces. (b) Report Not later than the earlier of 180 days after the production of the 2018 National Defense Strategy (which is intended to be closely coordinated with and complementary to a new National Security Strategy) or December 31, 2018, the Secretary shall submit to the Committees on Armed Services of the Senate and the House of Representatives a report on the assessment required by subsection (a). The report shall include the following: (1) Recommendations for force size, structure, and basing in Europe, the Middle East, and Asia Pacific that reflect and complement the force sizing construct included in the 2018 National Defense Strategy in order to guide the growth of the force structure of the Armed Forces, which recommendations shall be based on an evaluation of the relative costs of rotational and forward-based forces as well as impacts to deployment timelines of threats to lines of communication and anti-access area denial capabilities of potential adversaries. (2) An assessment by each commander of a geographic combatant command of the capability and force structure gaps within the context of an evaluation of the potential threats in the theater of operations of the combatant command concerned and the operation plans that such combatant command are expected to execute. (3) An evaluation of the concept of operations and the sources of manpower for headquarters required to oversee and direct execution of current operations plans. 1062. Army modernization strategy (a) Strategy required The Secretary of the Army shall develop a modernization strategy for the total Army. (b) Elements The strategy required by subsection (a) shall include the following: (1) A comprehensive