A warrant officer is a rank or category of ranks in the armed forces of many countries. They are highly specialized experts and trainers in their field, and are highly skilled, single-track specialty officers. They rank between specialists and commissioned officers, and are sometimes classified as the latter. In the US Army, warrant officers serve in 17 branches and 67 warrant officer specialties, spanning the Active Component, the Army National Guard, and the U.S. Army Reserve). They are technical experts, combat leaders, trainers, and advisors, and command the Armys waterborne and seagoing vessels, most Army bands, and as aircraft commanders of most Army Aviation aircraft). They may also be found in command of various small units and detached teams).

To become a warrant officer in the US Army, you must be an active-duty, Army Reserve, or Army National Guard enlisted Soldier and demonstrate expert proficiency in your skill and craft. You must also show a drive for growth in areas like leadership and discipline, and meet other success requirements. Warrant officers are highly specialized experts and trainers in their field, and commissioned officers rely on their technical expertise to successfully complete missions. They are regarded as trusted and esteemed colleagues.