<Tr> <Td> </Td> <Td> This article needs additional citations for verification . Please help improve this article by adding citations to reliable sources . Unsourced material may be challenged and removed . (April 2015) (Learn how and when to remove this template message) </Td> </Tr> <P> In the United States Armed Forces, the ranks of warrant officer (grades W ‐ 1 to W ‐ 5; see NATO: WO1--WO5) are rated as officers above the senior-most enlisted ranks, including all candidates, and cadets and midshipmen, but subordinate to the officer grade of O ‐ 1 (NATO: OF ‐ 1). This application differs from the Commonwealth of Nations and other militaries, where warrant officers are the most senior of the other ranks (NATO: OR ‐ 8 and OR ‐ 9), equivalent to the US Armed Forces grades of E ‐ 8 and E ‐ 9 . </P> <P> Warrant officers are highly skilled, single - track specialty officers, and while the ranks are authorized by Congress, each branch of the uniformed services selects, manages, and uses warrant officers in slightly different ways . For appointment to warrant officer one (W ‐ 1), a warrant is approved by the secretary of the respective service . For chief warrant officer ranks (W ‐ 2 to W ‐ 5), warrant officers are commissioned by the President of the United States and take the same oath as regular commissioned officers (O ‐ 1 to O ‐ 10). </P> <P> Warrant officers can and do command detachments, units, activities, vessels, aircraft, and armored vehicles, as well as lead, coach, train, and counsel subordinates . However, the warrant officer's primary task as a leader is to serve as a technical expert, providing valuable skills, guidance, and expertise to commanders and organizations in their particular field . </P>

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