Manual of Military Training - James A. Moss (read dune .TXT) 📗
- Author: James A. Moss
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The exercise will be executed as heretofore prescribed, except that at the command "Two" (position exercise) the soldier will rest the left elbow on the left knee, the point of the elbow in front of the kneecap, and the right elbow against the left or inside of the right knee, at the same time inclining the body from the hips slightly forward.
For the aiming and trigger-squeeze exercises the pasters, used as aiming points, will be 21/2 feet from the floor or the ground.
To afford the men rest or on the completion of the kneeling or sitting down exercises the instructor will command Rise, when the men rise, face to the front, and resume the "Order arms."
Remarks. If the preceding position is carefully practiced, steadiness is quickly attained. The right leg should not be carried so far to the right as not to afford a good support or brace for the right elbow.
This position may be modified, but, in general, not without impairing the steadiness of the man, by crossing the legs at the ankle, the outside of each foot resting upon the ground, body more erect, and the knees slightly more raised than in the previous position.
Position and Aiming Drill, Prone1380. From the nature of the position it is not practicable to execute these exercises according to the method followed when standing or kneeling. Instruction will, however, always be given with reference to the position, to the manner of assuming it, and to aiming and squeezing the trigger.
For this purpose the squad being formed as specified above, in the position and aiming drill, sitting down (the black plasters therein mentioned being about 12 inches from the ground), the squad will be brought to "Order arms."
Then (the squad either standing or kneeling), the instructor commands: Lie down, which will be executed as prescribed in the Drill Regulations; the legs may be spread apart and the toes turned out if found to give a steadier position.
After the squad has taken the position as prescribed above, the legs should be inclined well to the left, and either crossed or separated as the soldier prefers or as his particular conformation appears to render most desirable, and the body at the same time inclined slightly to the right.
With care and practice the soldier may acquire an easy position which he is able to assume with great facility.
1381. Being at "Ready," the instructor then commands: 1. Trigger squeeze. 2. EXERCISE.
At the latter command carry the left elbow to the front and slightly to the right, the left hand under the barrel at the balance, weight of the body mainly supported by the left elbow, the right resting lightly on the floor or ground.
(Two.) Slide the rifle with the right hand through the left hand to the front until the left hand is a little in front of the trigger guard; at the same time raise the rifle with both hands and press it against the hollow of the shoulder.
(Three.) Direct the rifle upon the mark and carry out the further details of aiming and squeezing the trigger as prescribed in the trigger-squeeze exercise.
Then resume the position, lying down.
As soon as the men have acquired with accuracy the details of the position, they will be practiced, without the numbers, in aiming and squeezing the trigger at will; after which the rapid-fire exercise in the prone position will be practiced, the necessary skill and dexterity being acquired by degrees.
To afford the men rest, or on completion of the exercise, the instructor will command: Rise, which is executed as prescribed in the Drill Regulations.
1382. Remarks. The preceding position for firing lying down possesses in a greater degree than any other position the merit of adaptability to the configuration of the ground; it enables the soldier to deliver fire over low parapets or improvised shelters, thus making the best use of cover. The importance of training the soldier in firing from the other positions should not, however, be lost sight of, since from the prone position it will frequently be impossible to see the objective.
Back positions are not authorized.
In the prone position, when aiming, the left elbow should be well under the barrel, the other elbow somewhat to the right, but not so far as to induce any tendency to slip on the floor or ground.
The greater changes in elevation required in first directing the rifle on the object should be given by altering the position of the left hand under the barrel, the slighter changes only by advancing or withdrawing the shoulder.
As the body does not yield to the recoil, as when firing standing or kneeling, the force of recoil, if the rifle is not properly held, may severely bruise the soldier. It is one of the objects of this exercise to so teach him that this will be prevented by assuming a correct position. Care must be exercised that the butt is not brought against the collar bone. By moving the shoulder slightly to the front or rear, and by moving the right elbow from the body or toward it, each soldier may determine the position in which the shoulder gives to the butt of the rifle the easiest rest. This will probably be the one in which the force of the recoil will be least felt.
The soldier should persist in this exercise until he obtains a position in which he feels no constraint, which will not subject him to bruises from recoil, and from which the mark appears plainly through the sights. Having secured such a position, he must not change it when firing, as a variation in the points of support of the rifle, the distance of the eye from the rear sight, or the tension of the hold has a decided effect, especially at the longer ranges, upon the location of the point struck.
Important. The soldier should be encouraged to go through these exercises frequently at other than drill hours, care being taken that, in the aiming and trigger-squeeze exercises, he always has some definite object for a mark.
Deflection and Elevation Correction Drills(Sight-Setting Drills)
1383. Sight Correction. You may find when firing at a target that the first shot has missed the bull's-eye or figure. Now, one of two things may be done in order to cause the second shot to hit the bull's-eye or figure: (1) The point of aim may be changed, or (2) the sights may be moved and the same point as before aimed at.
In order to do accurate shooting it is necessary to have a well-defined mark at which to aim; consequently, except for very slight corrections, the method of moving the sights, involving changes in elevation and windage, is the one to be used.
Exercises. In order to give the soldier practice in making corrections in elevation and deflection (windage),—that is, in sight-setting,—proceed as follows:
Take an "A" target and rule it off with red vertical lines to represent range and black or blue horizontal lines to represent windage deviations, as in Fig. 33. Tell the men to set their sights (either peep or open) for 200 yards, no windage. Examine the sights (assisted by the lieutenants, noncommissioned officers and expert riflemen).
Then say, for example, "You have fired a shot at 200 yards with your sights set as you now have them. The shot was marked here (pointing to 'P,' Fig. 33). Change your sights so as to move the next shot into the bull's-eye,—considering that you take the same hold as you did the last time."
(Note. In this case the sight should be lowered 75 yards and 2 points of left windage should be taken.)
Repeat with different positions for "P" until the men all understand the method and the reasons. Do same for 300 yards, 500 yards, and 600 yards. See Figs. 34, 35, and 36.
Explain that in firing no change in sights should be made until the man is sure that his hold was good, and then change without hesitancy.
The correct use of sights and their proper adjustment can thus be taught without firing a shot. This exercise will save much time and work on the range.
Elevation. As previously explained, raising the rear sight increases the range of the bullet and lowering it decreases the range.
The amount of change which a given amount of elevation will cause in the point struck varies with the range and with the rifle and with the ammunition used.
For example, generally and approximately, in order, at a range of 500 yards, to change the point struck 1 foot, the rear sight must be changed 48 yards, while to change the point struck 1 foot at 1000 yards it must be changed 12 yards. That is to say, if you fired a shot at 300 yards, and then with the same aim, hold and other conditions as before, you raised your rear sight 48 yards, the next shot would strike the target 1 foot above the first one, and if you lowered the rear sight 48 yards, the bullet would then strike the target 1 foot below the first one. If firing at 1000 yards, raising the rear sight 12 yards would cause the bullet to strike the target 1 foot higher and lowering the rear sight 12 yards would cause it to strike 1 foot lower.
The following table gives the approximate changes in the rear sight to move the point struck 1 foot at ranges from 100 to 1000 yards:
Range Correction in elevationnecessary to change the
point struck 1 foot 100 415 200 185 300 105 400 70 500 48 600 35 700 25 800 20 900 15 1,000 12
The score-books issued by the Ordnance Department contain elevation charts and all you have to do is to consult the chart of your score-book in order to get the amount of elevation necessary at any particular range in order to raise or lower your shots any desired distance.
1384. Deflection (windage). Corrections in the deflection (side movement) of the bullet are made by means of the windage screw that moves the movable base, each division of the graduations on the rear end of the movable base being called a "point of windage."
One point of windage moves the point struck 4 inches for each 100 yards of range.
That is to say, at 100 yards, 1 point of windage moves the point struck 4 inches; at 200 yards, 8 inches (2 × 4); at 300 yards, 12 inches (3 × 4), etc.
Consequently, if at 100 yards the wind were carrying your bullets 8 inches to the side, you would take two points of windage to get the bull's-eye, and if the wind were carrying your bullets 20 inches to the side, you would take 5 points of windage, irrespective of the rate at which the wind was blowing.
Again, if at 200 yards the wind were carrying your bullets 8 inches to the side, you would take 1 point of windage, and if it were carrying your bullets 20 inches to the side, you would take 21/2 points, irrespective of the rate at which the wind was blowing.
In using the wind gauge remember windage is always taken in the direction from which the wind is
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