49. In order that all may advance as rapidly as their abilities permit, the recruits are grouped according to proficiency as instruction progresses. Those who lack aptitude and quickness are separated from the others and placed under experienced drill masters. _INSTRUCTION WITHOUT ARMS._ 50. For preliminary instruction a number of recruits, usually not exceeding three or four, are formed as a squad in single rank. _Position of the Soldier, or Attention._ 51. 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 deg. 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 trousers. Head erect and squarely to the front, chin drawn in so that the axis of the head and neck is vertical; eyes straight to the front. Weight of the body resting equally upon the heels and balls of the feet. _The Rests._ 52. 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. 53. 1. _Parade_, 2. _REST_. Carry the right foot 6 inches straight to the rear, left knee slightly bent; clasp the hands, without constraint, in front of the center of the body, fingers joined, left hand uppermost, left thumb clasped by the thumb and forefinger of the right hand; preserve silence and steadiness of position. 54. To resume the attention: 1. _Squad_, 2. _ATTENTION_. The men take the position of the soldier. _Eyes Right or Left._ 55. 1. _Eyes_, 2. _RIGHT (LEFT)_, 3. _FRONT_. At the command _right_, turn the head to the right oblique, eyes fixed on the line of eyes of the men in, or supposed to be in, the same rank. At the command _front_, turn the head and eyes to the front. _Facings._ 56. To the flank: 1. _Right (left)_, 2. _FACE_. Raise slightly the left heel and right toe; face to the right, turning on the right heel, assisted by a slight pressure on the ball of the left foot; place the left foot by the side of the right. Left face is executed on the left heel in the corresponding manner. _Right (left) half face_ is executed similarly, facing 45 deg. "To face in marching" and advance, turn on the ball of either foot and step off with the other foot in the new line of direction; to face in marching without gaining ground in the new direction, turn on the ball of either foot and mark time. 57. To the rear: 1. _About_, 2. _FACE_.