When an expansion of the active armed forces requires that officers of the reserve components who are not members of units organized to serve as such be ordered as individuals to active duty (other than for training) without their consent, the services of qualified and available reserve officers in all grades shall be used, so far as practicable, according to the needs of the branches, grades, or specialties concerned.
Structure US Code
Subtitle E— Reserve Components
§ 12301. Reserve components generally
§ 12303. Ready Reserve: members not assigned to, or participating satisfactorily in, units
§ 12308. Retention after becoming qualified for retired pay
§ 12309. Reserve officers: use of in expansion of armed forces
§ 12310. Reserves: for organizing, administering, etc., reserve components
§ 12311. Active duty agreements
§ 12312. Active duty agreements: release from duty
§ 12313. Reserves: release from active duty
§ 12314. Reserves: kinds of duty
§ 12315. Reserves: duty with or without pay
§ 12316. Payment of certain Reserves while on duty
§ 12317. Reserves: theological students; limitations
§ 12318. Reserves on active duty: duties; funding
§ 12319. Ready Reserve: muster duty
§ 12320. Reserve officers: grade in which ordered to active duty
§ 12321. Reserve Officer Training Corps units: limitation on number of Reserves assigned
§ 12322. Active duty for health care
§ 12323. Active duty pending line of duty determination required for response to sexual assault