CORIDOR, the covert way which is formed between the fossé and the pallisade on the counterscarp. See COVERT-_way_. This word is becoming obsolete as a military term, and is chiefly confined to domestic buildings. CORNAGE, an ancient tenure, which obliged the land-holder to give notice of an invasion by blowing a horn. CORNE, _ou_ OUVRAGE _a_ CORNE, _Fr._ See HORNED WORK. CORNET, in the military history of the ancients, an instrument much in the nature of a trumpet: when the cornet only sounded, the ensigns were to march alone without the soldiers; whereas, when the trumpet only sounded, the soldiers were to move forward without the ensigns. A troop of horse was so called. CORNET, in the military history of the moderns, the junior commissioned officer in a troop of horse or dragoons, subordinate to the captain and lieutenants, equivalent to the ensign amongst the foot. His duty is to carry the standard, near the centre of the front rank of the squadron. CORNETTE-BLANCHE, _Fr._ an ornament which in ancient times, served to distinguish French officers who were high in command. It was worn by them on the top of their helmets. It likewise meant a royal standard, and was substituted in the room of the Pennon Roïal. The cornette-blanche was only unfurled when the king joined the army; and the persons who served under it were princes, noblemen, marshals of France, and old captains, who received orders from the king direct. CORNETTE, _Fr._ See CORNET. _The_ CORNETTES or _Cornets_, of the colonel general of cavalry, in the old French service, as well as those attached to the quarter-master general and commissary general, ranked as lieutenants, and the cornettes of la colonelle général des dragons ranked as youngest lieutenants, and commanded all other cornets. CORNETTE, _Fr._ was likewise the term used to signify the standard peculiarly appropriated to the light cavalry. Hence cornettes and troops were synonimous terms to express the number of light-horse attached to an army. The standard so called was made of taffeta or glazed silk, one foot and a half square, upon which the arms, motto, and cypher of the officer who commanded the cavalry were engraved. A sort of scarf or long piece of white silk, (the old French colors) was tied to the cornette whenever the cavalry went into action, in order to render the standard conspicuous, that the men might rally round it. CORNISH _ring_, in gunnery, the next ring from the muzzle backwards. See CANNON. CORPORAL, a rank and file man with superior pay to that of common soldiers, and with nominal rank under a serjeant. He has charge of one of the squads of the company, places and relieves centinels, and keeps good order in the guard. He receives the word of the inferior rounds that pass by his guard. Every company should have a corporal for every ten men. _Lance_-CORPORAL, one who acts as corporal, receiving pay as a private. CORPS, any body of forces, destined to act together under one commander.