An adjutant is a military officer whose duty is to supervise, under his superiors, all matters relating to the ordinary routine of discipline in the regiment. It is a staff officer who helps a commanding officer with administrative affairs. Duties may include, among others, providing personnel administration and training guidance, preserving militia records, attending public military reviews, transmitting orders to military units, and reporting to superiorsm on the condition of their equipment, discipline, and finances.
Some states have an adjutant general who acts as the channel of communication between the federal government and the state on all matters pertaining to the state military and naval forces. The adjutant general may advise on and carry out the governor's policies, issue orders in his name, and perform the responsibilities assigned by state laws.