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357 (2) Officers designated for limited duty whose names appear on the promotion list are, in the order in which their names appear, eligible for promotion to the next higher grade as vacancies occur in that grade among officers designated for limited duty. (3) Captains in the Navy designated for engineering duty, aeronautical engineering duty, or special duty whose names appear on the promotion list are, in the order in which their names appear, eligible for promotion to the grade of rear admiral as vacancies occur in that grade among officers restricted in the performance of duty. (4) Colonels designated for supply duty whose names appear on the promotion list are, in the order in which their names appear, eligible for promotion to the grade of brigadier general as vacancies occur in that grade among officers designated for supply duty. (5) An officer in the grade of commander or below designated for engineering duty, aeronautical engineering duty, or special duty whose name appears on the promotion list is eligible for promotion to the next higher grade when the line officer not restricted in the performance of duty whose name appears next below his on the promotion list becomes eligible for promotion. (6) An officer in the grade of lieutenant colonel or below designated for supply duty whose name appears on the promotion list is eligible for promotion to the next higher grade when the officer not restricted in the performance of duty whose name appears next below his on the promotion list becomes eligible for promotion. However, an officer in the grade of lieutenant in the Navy designated for engineering duty, aeronautical engineering duty, or special duty is not eligible for promotion to the grade of lieutenant commander until there is a vacancy for him among officers of his designation in the combined grades of captain, commander, and lieutenant commander; and an officer in the grade of captain in the Marine Corps designated for supply duty is not eligible for promotion to the grade of major until there is a vacancy for him among officers of his designation in the combined grades of colonel, lieutenant colonel, and major. (c) Except as provided in subsection (d), each male officer in the line of the Navy and each male officer of the Marine Corps, when promoted to a higher grade, shall be assigned the date of rank and registered number that will give him rank in the order in which his name appeared on the promotion list for that grade. (d) Each officer promoted to the grade of major general under this section shall be assigned the date of rank held by him in the grade of brigadier general. However, except as provided in sections 5767 and 5777 of this title, the date of rank may not be earlier than that of the junior officer then in the grade of major general. § 5770. Regular Navy; male line officers not restricted to the performance of duty or designated for limited duty: sea or foreign service required (a) A male officer on the active list in the line of the Navy who is not restricted in the performance of duty or who is designated for
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