IRR
Individual Ready Reserve (IRR). A manpower pool within the Ready Reserve of each of the RCs consisting of individuals who have had some training or who have served previously in the AC or in the Selected Reserve, and may have some period of their MSO remaining pursuant to 10 U.S.C. 651. The IRR consists of members of the Ready Reserve who are not in the Selected Reserve or the ING. Additionally, the IRR also includes some personnel who are participating in officer training programs or in the Armed Forces Health Professions Scholarship and Financial Assistance Programs.
Source
32 CFR § 44.3
Scoping language
For purposes of this part, the following definitions apply: