Navy and marines. Return of numbers of commissioned officers, subordinate and warrant officers, petty officers, men, and boys of the executive branch, engineer branch, and other branches of the Royal Navy, borne on 1 April 1858, 1868, 1878, 1888, and 1898, respectively, excluding pensioners and reserves; and, a similar return of the numbers of the commissioned, warrant, and non-commissioned officers and men of the Royal Marine Force [electronic resource].