OASD(Sustainment) Functions and Tasks
The Assistant Secretary of Defense for Sustainment (ASD(Sustainment)) serves as the principal staff assistant
and advisor to the Under Secretary of Defense for Acquisition & Sustainment (USD(A&S)), Deputy Secretary of
Defense (DEPSECDEF), and Secretary of Defense (SECDEF) on logistics and materiel readiness in the Department of Defense (DoD) and
is the principal logistics official within the senior management of the DoD. In this capacity, the ASD(Sustainment):
- Prescribes policies and procedures for the conduct of logistics, maintenance, materiel readiness, strategic mobility,
and sustainment support in the DoD, to include, supply, maintenance, and transportation.
- Advises and assists the USD(A&S), SECDEF, and DEPSECDEF in providing guidance to the Secretaries of the Military
Departments with respect to logistics, maintenance, materiel readiness, strategic mobility, and sustainment support
in the DoD.
- Monitors and reviews all logistics, maintenance, materiel readiness, strategic mobility, and sustainment support
programs within the DoD.
- Participates in the DoD Planning, Programming, and Budgeting System with respect to assigned areas of
- Performs other duties that may be prescribed by the USD(A&S), DEPSECDEF or SECDEF.
In the performance of these duties, the ASD(Sustainment):
- Exercises authority, direction and control over the Director of the Defense Logistics Agency.
- Coordinates and exchanges information with officials of the DoD Components and other Federal Agencies,
whenever practicable, to achieve maximum efficiency.
- Other OSD officials and the Heads of the DoD Components coordinate with the ASD(Sustainment) on all matters
related to the authorities, responsibilities and functions assigned by DoD Directive 5134.12.
According to DoDD 5134.12, the ASD(Sustainment) is delegated authority to:
- Issue DoD Instructions, DoD Publications, and one-time directive-type memoranda, consistent with DoD 5025.1-M,
that implement logistics policies and procedures for the functions assigned to the ASD(Sustainment). Instructions to
the Military Departments are issued through the Secretaries of the Military Departments. Instructions to the Combatant
Commands are communicated through the Chairman of the Joint Chiefs of Staff.
- Obtain reports, information, advice, and assistance, consistent with DoDD 8910.1, as necessary in carrying out assigned
- Communicate directly with the Heads of the DoD Components. Communications to the Commanders of the Combatant Commands
shall be through the Chairman of the Joint Chiefs of Staff.
- Establish arrangements for DoD participation in non-Defense governmental programs for which the ASD(Sustainment) is
assigned primary staff cognizance.
- Communicate with other Government Agencies, representatives of the Legislative Branch, and members of the public,
as appropriate, in carrying out assigned functions.