PUBLIC LAWS-CH. 512 -AUG. 7, 1947 Recommendations by the Secretary of the Navy: Provided, That no officer shall be forecommended for promotion or for continuation on the active list unless he shall have received the recommendation of not less than two-thirds of the acting members of the board: Provided further, That whenever there are insufficient general officers available to com- prise a selection board for the recommendation of officers for promo- tion to the grades of brigadier general and colonel without placing thereon general officers who served as members of the same corre- sponding board the preceding year, officers of the active list of the line of the Navy, not restricted in the performance of duty, of the grade of rear admiral may be substituted for general officers of the Marine Corps in order to comply with the provisions of subsection Ante, p.1. 105 (b) of this title: Provided further, That selection boards to recommend brigadier generals for promotion to major general shall be composed of officers of the permanent grade of major general on the active list of the Marine Corps to the extent that such officers are deemed available for this duty by the Secretary of the Navy, and the remainder of the board shall be composed of rear admirals on the active list of the line of the Navy, not restricted in the performance Admiuitrativestafi of duty: And provided further, That administrative staff duty per- formed by any officer under appointment or detail, and duty in avia- tion, or in any technical specialty, shall be given weight by the selection board in determining his fitness for promotion equal to that given to line duty equally well performed. pointment o a (g) Whenever officers designated for supply duty are eligible for board. consideration by a selection board for promotion or for continuation on the active list, the Secretary of the Navy shall appoint, as alternate members of the appropriate selection board, three officers of that designation, and if there be not three available, he shall so appoint such lesser number as may be available, and the junior members of the board who are not restricted in the performance of duty, in like number, shall not act upon the cases of officers designated for supply duty. No such alternate member shall act upon the cases of officers other than those designated for supply duty. No officer designated for supply duty or for limited duty shall act upon the cases of officers romotion to ma not restricted in the performance of duty. general.in m (h) Promotion to major general shall be from brigadier generals who are not restricted in the performance of duty, and such officers shall be eligible for consideration by a selection board for promotion to major general when they will have completed, on June 30 of the fiscal year of the convening of the board, four years' service in that grade. The date of rank of an officer appointed in the grade of major general shall be the date of rank held by such officer in the grade of Anbrigadier general under permanent or temporary appointment: Pro- Ant, p 8. ided, That subject to the provisions of subsection 111 (c) of this title and of subsection 423 (b) of title IV of this Act, such date of rank shall not be earlier than that of the junior officer in the grade of major general: And provided further, That such an officer shall be entitled to the pay and allowances of the higher grade from the date of occur- Promotion one In rence of the vacancy which he is promoted to fill. gde ofbrionone in- (i) The promotion zone in the grade of brigadier general for officers enr. not restricted in the performance of duty shall be established by the Secretary of the Navy as of the date of the convening of a selection board to consider officers of that grade for recommendation for pro- motion to the next higher grade. It shall consist of that number of the most senior such officers of the grade of brigadier general, who are eligible for selection for promotion to the next higher grade and have not previously failed of such selection, which must be either selected for promotion by the particular board or be considered as 812 [61 STAT.