Vacancies occurring in the cavalry, coast artillery corps, field artillery, and infantry above the grade of 2nd lieutenant shall, subject to the examination required by law, be filled by promotion according to seniority from the next lower grade in the troop, the separate company, the field battery, the separate battalion, and the regiment in which the vacancy occurs.
D.C. Code § 49-307
Filling vacancies above the grade of 2nd lieutenant
Mar. 1, 1889, 25 Stat. 775, ch. 328, § 22; Feb. 18, 1909, 35 Stat. 630, ch. 146, § 15
Official source: D.C. Law Library (Council of the District of Columbia). Reproduced from public-domain District of Columbia statutes; confirm against the official source for the current text. Not legal advice.