When we are to make a map of a very small district, as of a county or town, whatever part of the earth it be in, the meridians and parallels may be equidistant straight lines, drawn through every minute, &c. of longitude, in proportion as the largeness of the map will allow. See Plotting and [Surveying].
The use of maps is obvious from their construction. The degrees of the meridians and parallels shew the longitude and latitude of places; their bearings from each other appear from inspection; and their distance from each other may be measured by the divisions on the meridian, equator, or scales. [Geography].
MARAUDE, Fr. The act of marauding. This word specifically means the theft or depredation which a soldier commits against the peasantry of the country, and for which offence, he is punished with death in all foreign services.
MARAUDEUR, Fr. A marauder. This term is now strictly English. Its signification, however, is generally the same in all services. Any soldier that steals out of camp, armed or unarmed, for the purpose of pillaging the country, is a marauder, and is liable, upon conviction, to be punished with death, or such other punishment as by a general court-martial shall be awarded.
Aller en Maraude, means to go out marauding.
MARAUDING, in a military sense, the act of plundering, which is generally committed by a party of soldiers, who, without any order, go into the neighboring houses or villages, when the army is either in camp or in garrison, to pilfer and destroy, &c. Marauders are a disgrace to the camp, to the military profession, and deserve no better quarters from their officers than they give to poor peasants, &c. Marauding is also applied to plundering at sea; thus the Barbary Corsairs, and the British navy are systematic marauders.
MARC, Fr. A weight equal to eight ounces. In France, it is usual for silversmiths and jewellers to take a marc at that standard, but when articles of greater bulk and grosser quality than those they deal in, are brought to the scale, the marc contains 16 ounces to the pound. All stores and ammunition were appreciated by this measure.
A MARCH, (une Marche, Fr.) is the moving of a body of men from one place to another. Care must be taken, in marching troops, that they are not liable to be flanked or intercepted; for of all operations none is more difficult, because they must not only be directed to the objects they have in view, but according to the movements the enemy may have made.
Of all the mechanical parts of war, none is more essential than that of marching. It may be justly called the key which leads to all important motions and manœuvres of an army; for they depend entirely on this point. A man can be attacked in four different ways; in the front, on both flanks, and in the rear: but he can defend himself, and annoy the enemy, only when placed with his face towards him. Hence it follows, that the general object of marching, is reduced to three points only; to march forwards, and on both sides, because it is impossible to do it for any time backwards, and by that means face the enemy wherever he presents himself. The different steps to be made use of are three: slow, quick, and accelerated. The first is used only at reviews, for parade, or in mounting guard. The second is proper in advancing, when at a considerable distance from the enemy, and when the ground is unequal, that the line may not be broken, and that a regular fire may be kept up without intermission. The third is chiefly necessary, when you want to anticipate the enemy in occupying some post, in passing a defile, and, above all, in attacking an intrenchment, to avoid being a long while exposed to the fire of the artillery and small arms, &c. Columns may be opened and formed into lines, and vice versa, lines into columns, by all these steps. In coming out of a defile, you may instantly form the line without presenting the flank to the enemy. The line may be formed, though ever so near to the enemy, with safety, because you face him, and can with ease and safety protect and cover the motion of the troops, while they are coming out of the defiles and forming. The same thing may be equally executed, when a column is to be formed, in order to advance or retreat; which is a point of infinite consequence, and should be established as an axiom.
The order of march of the troops must be so disposed, that each should arrive at their rendezvous, if possible, on the same day. The quarter-master-general, or his deputy, with an able engineer, should sufficiently reconnoitre the country, to obtain a perfect knowlege both of that and of the enemy, before he forms his routes.