A military dictionary

by William Duane

All manœuvres of a corps retiring, are infinitely more difficult to be performed with order, than those in advancing. They must be more or less accomplished by chequered movements; one body by its numbers or position, facing and protecting the retreat of another; and if the enemy presses hard, the whole must probably front in time and await him: as the ground narrows or favors, different parts of the corps must double; mouths of defiles and advantageous posts must be possessed; by degrees the different bodies must diminish their fronts, and throw themselves into column of march when it can be done with safety.

The chequered retreat by the alternate battalions or half battalions of a line going to the rear, while the others remain halted, cover them, and in their turn retire in the same manner, is the quickest mode of refusing a part of a corps to the enemy, and at the same time protecting its movement, as long as it continues to be made nearly parallel to the first position.

In the chequered retreat, the following rules must be observed: the battalions of the division nearest to the enemy, will form flanks as soon as there is nothing in their front to cover them; but the other divisions will not have any flanks except to the outward battalion of each. The battalions always pass by their proper intervals, and it is a rule in retiring, that the left of each shall always pass the right of the neighboring one.—Whatever advantage the ground offers, those advantages must be seized, without too critical an observance of intervals, or minute adherence to the determined distance of each retreat. The division next the enemy must pass in front, through the intervals of the division immediately behind, and any battalion that finds it necessary, must incline for that purpose. The retiring division must step out, and take up no more time than what is absolutely required to avoid confusion. The division nearest the enemy fires; the flanks of its battalions only fire when the enemy attempts to push through the intervals. When that division retires it fires on, skirmishes by its riflemen, and if they have none, by men detached from the light companies, if any, or from platoons formed of rear rank men of one or two of the companies, and placed behind the flanks of the battalions. But should any of its battalions be obliged to halt and to fire, a shorter step must then be taken by the line; and should the enemy threaten to enter at any of its intervals, besides the fire of its flanks, such platoons of the line behind it, as can with safety, must give it support.

RETRENCHMENT, in the art of war, is any work raised to cover a post, and fortify it against an enemy; such as fascines loaded with earth, gabions, barrels, &c. filled with earth, sand bags, and generally all things that can cover the men, and stop the enemy; but it is more applicable to a ditch bordered with a parapet; and a post thus fortified, is called a retrenched post, or strong post. Retrenchments are either general or particular.

General Retrenchments, are a kind of new defence made in a place besieged, to cover the defendants, when the enemy becomes master of a lodgment on the fortification, that they may be in a condition of disputing the ground inch by inch, and of putting a stop to the enemy’s progress, in expectation of relief; as, if the besieger’s attack a tenaille of the place, which they judge the weakest, either by its being ill flanked, or commanded by some neighboring ground; then the besieged make a great retrenchment, inclosing all that part which they judge in most danger. These should be fortified with bastions and demi-bastions, surrounded by a good ditch countermined, and higher than the works of the place, that they may command the old works, and put the besiegers to infinite trouble in covering themselves.

Particular RETRENCHMENTS, or retrenchments within a bastion, (retrenchemens dans un bastion, Fr.) Retrenchments of this description must reach from one flank to another, or from one casemate to another. It is only in full bastions that retrenchments can be thrown up to advantage. In empty bastions you can only have recourse to retirades, or temporary barricadoes above the ramparts. The assailants may easily carry them by means of hand grenades, for these retrenchments never flank each other. It is necessary to raise a parapet about five or six feet thick before every retrenchment. It must be five feet high, and the ditches as broad and as deep as they can be made. There must also be small mines run out in various directions, for the purpose of blowing up the assailants should they attempt to force the retrenchments.

RETURNS, in a military sense, are of various sorts, but all tending to explain the state of the army, regiment, troop, or company; namely, how many capable of doing duty, on duty, sick in quarters, barracks, infirmary, or hospital; prisoners, absent with or without leave; total effective; wanting to complete the establishment, &c. See [Regulations] and Amer. Mil. Lib.

Returns of a mine, are the turnings and windings of the gallery leading to the mine. See [Gallery].

Returns of a trench, the various turnings and windings which form the lines of the trench, and are, as near as they can be, made parallel to the place attacked, to avoid being infiladed. These returns, when followed, make a long way from the end of the trench to the head, which going the straight way is very short: but then the men are exposed; yet, upon a sally, the courageous never consider the danger, but getting over the trench with such as will follow them, take the shortest way to repulse the enemy, and cut off their retreat if possible.

Any officer who shall knowingly make a false return to any his superior officer authorised to call for such returns, shall, upon being convicted thereof before a general court-martial, be cashiered.