The centre file of the new support proceeds straight to the rear, rear rank leading, the other files close upon the centre successively; the support is halted at its proper distance, the new skirmishers having, in the meantime, taken up the position and employment in all things of those relieved. If the skirmishers are _advancing_ when the order to “relieve” is given, they receive the word “halt,” and allowing the new line of skirmishers to pass through them to a sufficient distance to the front, close to the centre, and follow on in support. If the skirmishers are _retiring_ when the order to “relieve” is given, the support “halts,” “fronts,” and “extends” upon its own line. Continuing the “retreat” so soon as the new support, having closed, has attained its proper distance. If “commence firing” has been given before the order to “relieve,” the relief takes place upon the principles just above described, with these additions—that if relieved at the _halt_, the old skirmishers spring up as the new skirmishers are reaching them and “double quick” to the rear one hundred paces before they begin to close—if in _advancing_, the new skirmishers “double quick” one hundred paces from the rear, and the same distance to the front of the old line, the latter lying down, and not rising or closing until the relief has opened its fire; and if, in _retiring_, the old support lies down so soon as it is extended, and allows the former skirmishers to pass through it at the “double quick” (continued for one hundred yards) before it springs upon the knee and opens its fire. The important object of the running and lying down in relieving under fire of course being, that the new and old lines of skirmishers should not be exposed when near together as large marks for the enemy’s shot. One subdivision extended, the other in support. Word of Command, “FORM SQUARE;” or, Bugle ....... “ALARM,” “ASSEMBLY.” The right section of the support wheels back half a quarter circle (45°) on its left, the left section half a quarter circle on its right, stepping back one or two paces so as to let the left of the right section overlap its right. The right section wheels up by threes to the left, the left section by threes to the right, threes close to the front and then face outwards, thus forming half a three deep square with the angle to the front. “Fix bayonets” and “commence firing” (outward rank kneeling in reserve) if the front is clear and the enemy near. Skirmishers run in and form the two rear faces of the square three deep, keeping to the right and left in running in so as not to hinder the fire, and not fixing bayonets until in their places. The faces of the square are wheeled back so as to stand _diamond like_ in reference to the general line, in order that the fire may be thrown clear of your own neighbouring squares. “CEASE FIRING.” “RIGHT SUBDIVISION COVER THE FRONT.”