=57.= To teach the recruits how to form in ranks the instructor will first place them in single rank, arranged according to height, the tallest man on the right, with intervals of about 4 inches between men, and will explain that the object of these intervals is to give freedom of movement in marching and in the use of the rifle in ranks. He will then direct each man singly to place the palm of the left hand on the hip, fingers pointing downward, and draw attention to the fact that the indicated interval of about 4 inches may be verified by each man so placing himself that his right arm, when hanging naturally at his side, touches the elbow of the man on his right. When this is understood, he will cause the recruits to fall out and successively to place themselves as before, each man verifying his interval by causing his right arm to touch the left elbow of the man on his right, the latter's hand being on his hip, as already explained. He will then explain that at the command =FALL IN= the men will, beginning with the right trooper, successively and quickly take their places in rank, each man placing the left hand at the hip as above and dropping his hand to his side as soon as the man on his left has the proper interval. =58.= The recruits having had sufficient instruction to understand how to form by command, the instructor commands: =FALL IN=. The men assemble as prescribed in par. 57, each taking the position of =attention= as described below. As soon as the recruits have had sufficient preliminary instruction they will habitually be formed as regularly prescribed for a squad. POSITION OF THE TROOPER, OR ATTENTION (DISMOUNTED). =59.= Heels on the same line and as near each other as the conformation of the man permits. Feet turned out equally and forming an angle of about 45°. Knees straight without stiffness. Hips level and drawn back slightly; body erect and resting equally on hips; chest lifted and arched; shoulders square and falling equally. Arms and hands hanging naturally, thumb along the seam of the breeches. Head erect and squarely to the front, chin drawn in so that the axis of the head and neck is vertical; eyes to the front. Weight of the body resting equally upon the heels and balls of the feet. THE RESTS. =60.= Being at a halt, the commands are: =FALL OUT=; =REST=; =AT EASE=; and 1. =Parade=, 2. =REST=. At the command =fall out=, the men may leave the ranks, but are required to remain in the immediate vicinity. They resume their former places, at attention, at the command =fall in=. At the command =rest=, each man keeps one foot in place, but is not required to preserve silence or immobility. At the command =at ease=, each man keeps one foot in place and is required to preserve silence, but not immobility.