officer (armed forces)

An officer is a member of an army, navy, air force or, in some cases, other uniformed service who holds a position of responsibility.Commissioned officers derive authority directly from a sovereign power and, as such, hold a commission charging them with the duties and responsibilities of a specific office or position. Commissioned officers are typically the only persons in a military environment able to exercise command (according to the most technical definition of the word) over a military unit.
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