Contraband of War. Are such articles as a belligerent has by the law of nations the right of preventing a neutral from furnishing to his enemy. Articles contraband of war are, in general, arms and munitions of war and those out of which munitions of war are made. Contraband articles are subject to confiscation; but very arbitrary interpretations have been affixed to the term by powerful states, when able to enforce them by arms. Thus, provisions are held contraband of war when it is the object to reduce the enemy by famine. But with respect to these and other articles not in their nature contraband, it seems to be the practice that the belligerent should purchase them from the neutral for a reasonable equivalent, instead of confiscating.

Contramure. In fortification, is a wall built before another partition-wall to strengthen it, so that it may receive no damage from the adjacent buildings.

Contravallation. In fortification, is an intrenchment formed in the same manner as the line of circumvallation, to defend the besiegers against the enterprises of the garrison. An army forming a siege lies between the line of circumvallation and contravallation. The trench of this line is towards the town, at the foot of the parapet, and is never made but when the garrison is numerous enough to harass and interrupt the besiegers by sallies. This line is constructed in the rear of the camp, and by the same rule as the line of circumvallation, with this difference, that, as it is only intended to resist a body of troops much inferior to a force which might attack the circumvallation, its parapet is not made so thick, nor the ditch so wide and deep.

Contre-forts (Fr.). Brick-work which is added to the revetment of a rampart on the side of the terre-plein, and which is equal to its height. Contre forts are used to support the body of earth with which the rampart is formed. They are likewise used in the revetments of counterscarps, in gorges and demi-gorges, etc. Contre-forts likewise form a part of the construction of powder-magazines, which are bomb-proof.

Contreras. A celebrated battle-field of Mexico, about 14 miles south of the capital. Here, on August 19 and 20, 1847, the American forces under Gen. Scott defeated and totally routed, with loss of all his artillery, the Mexican general Valencia.

Contribution. In a military sense, is an imposition or tax levied on the people of a conquered town or country.

Control Department. In the British service, is the department which performs all the administrative duties of the army, in fact, all duties neither combatant, educational, nor scientific. It has a sub-department which performs all work connected with supply and transport, and to which is attached the “Army Service Corps,” a body of men officered by the control department, and employed as butchers, bakers, military train, dispensers, hospital attendants, and those engaged in non-combatant duties generally.

Controller. In the British service, the highest grade in the control department. The officers holding it—three in number—rank with major-generals. A deputy controller belongs to the second grade in the control department. Officers holding it rank with lieutenant-colonels.

Convalescent. A soldier who though discharged from hospital is not sufficiently recovered to do duty.

Convention. In a military sense, is an agreement made between hostile armies for some well-defined purpose, such as the evacuation of a fort, territory, etc. One of the most celebrated conventions of modern times was that of Cintra (1808), between the French and the English generals.