ADJUTANT-GENERAL is a staff officer, who aids and assists a general in his laborious duties: he forms the several details of duty of the army, with the brigade-majors, and keeps an exact state of each brigade and regiment, with a roll of the lieutenant-generals, major-generals, colonels, lieutenant-colonels, and majors. He every day at head quarters receives orders from the general officer of the day, and distributes them to the majors of brigades, from whom he receives the number of men they are to furnish for the duty of the army, and informs them of any detail which may concern them. On marching days he accompanies the general to the ground of the camp. He makes a daily report of the situation of all the posts placed for the safety of the army, and of any changes made in their posts. In a day of battle he acts as aid to the general. In a siege he visits the several posts and guards of the trenches, and reports their situation, and how circumstanced: he gives and signs all orders for skirmishing parties (if time permit) and has a serjeant from each brigade to carry any orders which he may have to send. See _American Mil. Lib._ Article STAFF. ADJUTANT, an officer who aids the major in part of his duty, and performs it in his absence. He receives orders from the brigade-major, if in camp; and when in garrison, from the town-major: after he has carried them to his colonel or officer commanding the regiment, he then assembles the serjeant-major, drum-major and fife-major, with a serjeant and corporal of each company, who write the orders in an orderly book, to shew to their respective officers. If convoys, parties, detachments, or guards, are to be furnished, he gives the number which each company is to furnish, and hour and place for the assembling: he must keep an exact roster and roll of duties, and have a perfect knowlege of all manœuvres, &c. This post is usually given to an active subaltern. ADMIRAL, on the European establishiments, when on shore, are entitled to receive military honors, and rank with generals in the army. ADVANCE. See PAY in Advance. ADVANCED signifies some part of an army in front of the rest, as in _advanced guards_, which always precede the line of march or operations of a body of troops; again, as when a battalion, or guns of a second line are brought up in front and before the first line. This term also applies to the promotions of officers and soldiers. {_Fossé_} See FORTIFICATION. ADVANCED {_Ditch_} {_Guard._ See GUARD. ADVANCEMENT, in a military sense, signifies honor, promotion, or preferment, in the army, regiment or company. ADVANTAGE _Ground_, a ground that gives superiority, or an opportunity of annoyance or resistance. ADVICE-_Boat_, a vessel employed for intelligence. ADVOCATE _General_. See JUDGE _Martial_. ÆNEATORES, in military antiquity, the musicians in an army; including those who sounded the trumpets, horns, _litui_, _buccincæ_, &c.