| Army Ranks | Enlisted
An enlisted rank in the Army of the United States is any rank below a commissioned officer. The term can also be inclusive of noncommissioned officers. In most cases, enlisted service personnel perform jobs specific to their own occupational specialty, as opposed to the more general command responsibilities of commissioned officers. | | | | | | | | | | | | | |
| Officer
An officer is a member of an armed force 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 act as the commanding officer (according to the most technical definition of the word) over a military unit. | | | | | | | | | | | |
| Warrant Officer
The Army Warrant Officer is a technical expert, combat leader, trainer, and advisor. The purpose of the Army WO is to serve in specific positions which require greater longevity than the billet duration of commanders and other staff officers. The duration of these WO assignments result in increased technical expertise as well as the leadership and management skills that make them so effective for the Army.
Army Warrant Officers serve as technical and tactical experts and leaders in 45 basic WO Military Occupational Specialties. They serve in 15 branches of the service, spanning the Active service, the Army National Guard, and the U.S. Army Reserve. They also serve at every level from section to the upper echelons of the Department of the Army. | | | | | |
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