(ii) =Method of Instruction.=--Instruction will best be carried out on the ground or on the miniature range as described in Chapter X. When carried out on the ground a fatigue-man will be sent out to the front, and directed to move from cover to cover to the front of the class which will be provided with rifles on aiming-rests. At each halt, when the fatigue-man has taken cover, recruits will note the point on the ground or cover which conceals him, and take aim at it. After an arranged interval the fatigue-man will expose himself to view, and remain stationary while the instructor criticizes each man’s aim and corrects faults. Section =20=.--Aiming-Off for Wind. =1. The Wind-Gauge.=--_The use of the wind-gauge is not the normal means of making allowance for wind under service conditions._ =2. Judging Strength and Direction of Wind.=--The soldier should be taught to discriminate between mild, fresh, and strong winds, or winds blowing ten, twenty, or thirty miles an hour. The strength of the wind may be judged partly by sensation and partly by its effect on natural objects, such as clouds, water, trees, crops, hedges, bushes, undergrowth, dust, and smoke. The soldier may judge the direction of the wind, as front, rear, side, or oblique, by turning his face fully towards the wind. =3. Wind Deflection Table for Side Winds= (=Right-Angle Winds=).--The following figures give the approximate deflection of the bullet due to winds of varying direction and velocity at different ranges, and provide a rough guide for aiming-off for wind which is sufficiently accurate for practical purposes: +-------------+-----------------------------------------------------+ | | Strength of Wind. | | +-----------------------------------------------------+ | Range. | Mild. | Fresh. | Strong. | | | Miles per hour, | Miles per hour, | Miles per hour, | | | 10. | 20. | 30. | + ------------+-----------------+-----------------+-----------------+ | | Deflection. | Deflection. | Deflection. | | 500 yards | 2 feet | 4 feet | 6 feet | | 1,000 ” | 3 yards | 6 yards | 9 yards | | 1,500 ” | 6 ” | 12 ” | 18 ” | | 2,000 ” | 12 ” | 24 ” | 36 ” | +-------------+-----------------+-----------------+-----------------+ =Note--Oblique Winds.=--For oblique winds the approximate deflection at the above ranges may roughly be estimated as _half that of a side wind of the same velocity_ and allowance in aiming-off may be made accordingly.