Military Agent in the United States is a civil officer whose duty is the transporting of clothing and other articles; and the expenditures for other services attached to the military department; they act under direct orders from the War Department.
AGGER, in ancient military writers, 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.
Agger is also used for the whole road, or military way. Where highways were to be made in low grounds, as between two hills, the Romans used to raise them above the adjacent land, so as to make them of a level with the hills. These banks they called aggeres. Bergier mentions several in the Gallia Belgica, which were thus raised 10, 15, or 20 feet above ground, and 5 or 6 leagues long. They are sometimes called aggeres calceati, or causeways.
Agger, also, denotes a work of fortification, used both for the defence and the attack of towns, camps, &c. in which sense agger is the same with what was otherwise called vallum, and in later times, agestum: and among the moderns, lines; sometimes, cavaliers, terrasses, &c.
The agger was usually a bank, or elevation of earth, or other matter, bound and supported with timber; having sometimes turrets on the top, wherein the workmen, engineers, and soldiery, were placed. It had also a ditch, which served as its chief defence. The height of the agger was frequently equal to that of the wall of the place. Cæsar tells us of one he made, which was 30 feet high, and 330 feet broad. Besides the use of aggers before towns, they generally used to fortify their camps with them; for want of which precaution, divers armies have been surprised and ruined.
There were vast aggers made in towns and places on the sea-side, fortified with towers, castles, &c. Those made by Cæsar and Pompey, at Brundusium, are famous. Sometimes aggers were even built across arms of the sea, lakes, and morasses; as was done by Alexander before Tyre, and by M. Antony and Cassius.
The wall of Severus, in the north of England, may be considered as a grand agger, to which belong several lesser ones. Besides, the principal agger or vallum, on the brink of the ditch, Mr. Horsley describes another on the south side of the former, about 5 paces distant from it, which he calls the south agger; and another larger one, on the north side of the ditch, called the north agger. This latter he conjectures to have served as a military way; the former, probably, was made for the inner defence, in case the enemy should beat them from any part of the principal vallum, or to protect the soldiers against any sudden attack from the provincial Britons.
Agger Tarquinii, was a famous fence built by Tarquinius Superbus, on the east side of Rome, to stop the incursions of the Latins, and other enemies, whereby the city might be invested.
Agger is also used for the earth dug out of a ditch or trench, and thrown up on the brink of it: in which sense, the Chevalier Folard thinks the word to be understood, when used in the plural number, since we can hardly suppose they would raise a number of cavaliers, or terrasses.
Agger is also used for a bank or wall, erected against the sea, or some great river, to confine or keep it within bounds; in which sense, agger amounts to the same with what the ancients called tumulus and moles; the Dutch, dyke; and we, dam, sea-wall; the Asiatics call them bunds, &c.