when was the rank of chief petty officer established
Chief petty officer (United States) Chief Petty Officer (CPO) is the seventh enlisted rate (E-7) in the United States Navy and U.S. Coast Guard, just above petty officer first class and below senior chief petty officer. The rate of chief petty officer is that of a senior non-commissioned officer, and was established on 1 April 1893 for the United States Navy.[1] The United States Congress first authorized the Coast Guard to use the promotion to chief petty officer on 18 May 1920.[2] Chief petty officer is also the final cadet rate in the U.S. Naval Sea Cadet Corps.
Sergeant Major of the Army The rank and position were based on those of the Sergeant Major of the Marine Corps (established in its current incarnation on 23 May 1957).[6] The Chief of Staff of the Army created the position in 1966 after asking leaders of the major commands for a personal recommendation. He asked that it not be considered a near-retirement type assignment. He listed seven duties and functions he expected the Sergeant Major to perform, including service as a personal adviser and assistant on matters pertaining to enlisted soldiers. From 4,700 proposed candidates, 21 nominees were selected. Finally chosen was the only one then serving in Vietnam, Sergeant Major William O. Wooldridge of the 1st Infantry Division.[7]