AR 135-91 — Service Obligations, Methods Of Fulfillment, Participation Requirements, And Enforcement Procedures
AR 135-91 governs service obligations and participation requirements for the Army National Guard and U.S. Army Reserve.
- Publication number: AR 135-91
- Title: SERVICE OBLIGATIONS, METHODS OF FULFILLMENT, PARTICIPATION REQUIREMENTS, AND ENFORCEMENT PROCEDURES
- Date: 05/15/2026
- Proponent: G-1
- Status: ACTIVE
View AR 135-91 on armypubs.army.mil
Related publications
- ARMY DIR 2021-12 (armypubs)
- ARMY DIR 2022-06 (armypubs)
AR 135-91 addresses military service obligations, Ready Reserve requirements, participation, absences, reassignment, removal, and enforcement. It requires specified elections before expiration of service, establishes transfer conditions, and includes mandatory training requirements.
Applies to: This regulation prescribes the policies and procedures governing service obligations and participation requirements of the Army National Guard (ARNG)/Army National Guard of the United States (ARNGUS) and the U.S. Army Reserve (USAR).
Topics covered
- Military service obligations
- Ready Reserve obligations
- Mandatory training requirements
- Excused absences
- IRR transfer eligibility
- Unit transfer following permanent change of residence
- Pregnancy counseling
Questions and answers
How long is the statutory military service obligation?
Soldiers who enter military service by enlistment or appointment incur an MSO of 8 years from that entry date. (paragraph 2-2)
What does the Ready Reserve obligation require?
The Ready Reserve (RR) obligation requires a Soldier to remain in an active RC unit of the RR or an RR Control Group (CG). (paragraph 2-4)
What happens if a Soldier fails to make an election by the deadline?
If the Soldier fails to make an election by the 90-day deadline, the unit commander will, without delay, initiate an involuntary transfer of the Soldier to the appropriate CG (for example, USAR CG or IRR). (paragraph 2-4)