An adjutant is a military assignment assigned to an officer who assists the commander in the management of units, mainly in the management of human resources in army units. The term “adjutant” is used in the French-speaking armed forces as an officer structure similar to a personal sergeant or ensign, but not equivalent to the role or appointment of the adjutant. Adjutant General - Commander of the Army Administrative Services. Adjutant comes from the Latin adiutāns, the real participle of the verb adiūtāre, a frequent form of adiuvāre “help”; the Romans actually used adiūtor for a noun. In various uniform hierarchies, this term is used to refer to a number of functions, but, as a rule, as the chief assistant to the commander. A regimental adjutant, a garrison adjutant, etc., is a staff officer who assists the commander of a regiment, battalion, or garrison in the details of a regimental, garrison, or similar duty. In U.S. Army squadrons, the adjutant is often the executive officer (OIC) of the administrative platoon.