grade structure vacancy—promotion to brigadier general and major general

grade structure vacancy—promotion to brigadier general and major general Sec. 313. When vacancies are authorized or are anticipated among nonunit officers of the Army Reserve in the grades of major general or brigadier general, the Secretary may appoint and convene a selection board to consider for promotion officers of the Army Reserve in the grade of brigadier general and colonel, respectively, who fulfill the requirements of section 306 and who meet minimum standards to be prescribed by the Secretary, and prescribe the number of officers to be recommended for promotion. The selection board shall recommend the prescribed number of officers deemed best qualified of those considered. Upon attaining the total years of service required by section 315 (a), an officer recommended for promotion under this sec-68 Stat. 1158tion may be promoted at any time to fill a vacancy, but it is not mandatory that the authorized number in these grades be maintained.