Title 10 › Subtitle E — Reserve Components › PART II — PERSONNEL GENERALLY › CHAPTER 1209 — ACTIVE DUTY › § 12304b
The Secretary of a military department can order units of the Selected Reserve to active duty without the members’ consent for up to 365 consecutive days to support a planned mission for a combatant command. Such orders can only happen if the manpower and costs are spelled out in the official defense budget documents, including a description of the mission and the expected length of the activation; if the President’s budget is late (after April 1), the Secretary may send that budget info to Congress separately. No more than 60,000 reserve members may be on active duty under this rule at once. Those called up do not count against regular active‑duty strength limits. The Secretary must send Congress a written report explaining why the call‑up was needed and how the unit will be used. Service can end by the Secretary’s order or by law. The War Powers Resolution still applies. When choosing units to involuntarily activate, officials must consider prior service, how often a member has been assigned, family responsibilities, and needed civilian jobs. Each military department must make policies to carry this out, and those policies must be approved by the Secretary of Defense before they start.
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Armed Forces, Source: USLM XML via OLRC
Legislative History
Reference
Citation
10 U.S.C. § 12304b
Title 10, Armed Forces
Last Updated
Sep 23, 2026
Release point: 119-110