Ready reserve. Reserve unit members or individual Reserve and National Guard members, or both, liable for AD, as provided in 10 U.S.C. 12301, 12302, and, for some members, 10 U.S.C. 12304. It consists of the Selected Reserve, the Individual Ready Reserve, and the Inactive National Guard.
32 CFR § 44.3
For purposes of this part, the following definitions apply: