The =preparatory= command should be given at such an interval of time before the command of =execution= as to admit of being properly understood; the command of =execution= should be given at the instant the movement is to commence. The preparatory command is enunciated distinctly, with a rising inflection at the end, and in such manner that the command of execution may be more energetic. On foot, the command of execution is firm in tone and brief. In mounted movements the preparatory command is usually somewhat prolonged to insure its being heard, and the command of execution is always prolonged. _Commands will be given no louder than is necessary._ Laxness or indifference suggested in the manner of giving a command is certain to result in corresponding carelessness of execution. =44.= To revoke a preparatory command, or being at the halt, to begin anew a movement improperly begun: =AS YOU WERE=. Any movement ceases and the former position is resumed. =45.= To stay the execution of a movement when marching, for the correction of errors, the commands may be given: 1. =In place=, 2. =HALT=. All halt and stand fast. If executed dismounted, the position of the rifle is not changed. To resume the movement, the commands are: 1. =Resume=; or, 1. =Resume, trot=; or, 1. =Resume, gallop=. 2. =MARCH=. The movement is then completed as if it had not been interrupted. =46.= Movements that may be executed toward either flank are explained as toward but one flank, it being necessary to substitute the word "left" for "right," and the reverse, to have the explanation of the corresponding movement toward the other flank. The commands are given for the execution of the movements toward either flank. The substitute word of the command is placed within parentheses. =47.= Any movement may be executed either from the halt or when marching unless otherwise prescribed. Any movement on foot not specially excepted may be executed in double time. If at a halt, or if marching in quick time, the command =double time= precedes the command of execution. =48.= As instructors, officers and noncommissioned officers go wherever their presence is necessary. =49.= Before beginning work, the instructor always assures himself that those under his charge are neatly dressed and in proper uniform. At mounted formations he will also require that horses be properly groomed and that equipments be in good condition and adjusted as prescribed. =50.= The value of recruit drill as an exercise in teaching discipline must be kept constantly in view by the instructor. No phase of the instruction is of such great ultimate importance. =Section 3. School of the trooper, dismounted.=