Reverse. A change for the worse, or partial defeat.

Reverse Fire. See [Fire, Reverse].

Reverse Flank. See [Flank, Outward].

Reversed. Upside down; as, arms reversed. Arms are said to be reversed when the butts of the pieces are slung, or held upwards.

Reversed. In heraldry, a term applied to a charge turned upside down.

Revet. In fortification, to face with masonry, wood, or material, as an embankment.

Revetment. In permanent fortification, is a retaining wall of masonry built for the purpose of holding back the earth of which works are composed. The most ordinary position of revetments is for the escarp and counterscarp of the ditch. The most important of these two is the escarp, which has to hold back the great mass of earth represented by the rampart, parapet, banquette, etc. It is usually of solid brick-work or stone, 5 feet thick at the top, and sloping outwards as it descends (on the ditch side only) to the extent of 1 in 6. Prior to Vauban’s time, the escarp revetment was commonly raised to the top of the parapet; but as in this case the artillery of a besieger played on the top of the wall, and ruined it soon after the siege commenced, that engineer adopted the principle—thenceforth followed—of raising it no higher than the crest of the glacis, or about 7 feet above the natural ground, leaving the parapet above of sloped earth only. When the main ditch is 24 feet deep, the scarp revetment will be about 30 feet high. Additional strength is imparted to the revetment wall by massive buttresses at every 15 feet, called [counter-forts], and these again are sometimes connected and strengthened by masonry arches outside the revetment. The revetment forms a terrible barrier to an assaulting party. In field-works temporary revetments may be made of timber, turf, hurdles, or any other materials on hand.

Review. An examination or inspection of troops under arms, by a general or commander, for the purpose of ascertaining the state of their discipline, equipments, etc.

Revision. A re-examination for correction. Where an officer, who orders a court-martial, does not approve their proceedings, he may, by the custom of war, return them to the court for revision, and no additional evidence can be taken on such revision.—Hough.

Revocable. That may be recalled. Nominations for appointments in the army are made by the President of the United States, subject to the concurrence of the Senate, who, if they disagree, revoke the appointment.