=Agger.= In ancient military writings, denotes the middle part of a military road raised into a ridge, with a gentle slope on each side to make a drain for the water, and keep the way dry; it is also used for a military road. Agger also denotes a work or fortification, used both for the defense and attack of towns, camps, etc., termed among the moderns, lines. Agger is also used for a bank or wall erected against the sea or some great river to confine or keep it within bounds, and called by modern writers, dam, sea-wall. =Agiades.= In the Turkish armies are a kind of pioneers, or rather field engineers, employed in fortifying the camp, etc. =Agiem-clich.= A very crooked sabre, rounded near the point; an arm much in use in Persia and Turkey. =Agincourt=, or =Azincourt=. A village of France, celebrated for a great battle fought near it in 1415, wherein Henry V. of England defeated the French. =Agmen.= Roman name for an army on the march. =Agminalis.= Name given by the ancients to a horse which carried baggage, equipments, etc., on its back; now termed pack-horse. =Agnadello.= Village in the duchy of Milan, on a canal between the rivers Adda and Serio, celebrated by the victory of Louis XII., king of France, over the Venetian and Papal troops in 1509, and by a battle between Prince Eugene and the Duke of Vendôme in 1705. =Agrigente= (now _Girgenti_). City in Sicily, situated on the Mediterranean; sacked by the Carthaginians under Amilcar in 400 B.C., and taken twice by the Romans in 262 and 210 B.C. =Aguebelle.= City in the province of Maurienne, in Savoy. The French and Spaniards defeated the troops of the Duke of Savoy in 1742. =Aguerri= (_Fr._). A term applied to an officer or soldier experienced in war. =Agustina.= See SARAGOSSA, MAID OF. =Ahmednuggur.= A strong fortress in the Deccan, 30 miles from Poonah, which was formerly in the possession of Scindia, but fell to the British arms during the campaign conducted by Gen. Wellesley. =Aidan= (_Prince_). See SCOTLAND. =Aid-de-camp.= An officer selected by a general to carry orders; also to represent him in correspondence and in directing movements. =Aid-major= (_Fr._). The adjutant of a regiment. =Aigremore.= A term used by the artificer in the laboratory, to express the charcoal in a state fitted for the making of powder. =Aiguille= (_Fr._). An instrument used by engineers to pierce a rock for the lodgment of powder, as in a mine, or to mine a rock, so as to excavate and make roads. =Aiguillettes.= A decoration, consisting of bullion cords and loops, which was formerly worn on the right shoulder of general officers, and is now confined to the officers of household cavalry; also worn in the U. S. army by officers of the adjutant-general’s department, aids-de-camp, and adjutants of regiments.