3. Officers, non-commissioned officers, and men detailed for machine-gun training should be changed as little as possible; the two non-commissioned officers and twelve men trained as first-class machine gunners will fire the practices prescribed in the Musketry Regulations with one of the companies of the battalion,[67] but will at other times be at the disposal of the machine-gun officer for instruction.

4. Details as to the mechanism of the gun, and the drill of machine-gun sections are contained in the handbook of the gun. Instructions as to the course of firing are contained in the Musketry Regulations.

5. The preliminary training, which may be carried out in the neighbourhood of barracks, will consist in instruction in the mechanism of the gun; in the drill and methods of laying, ranging, and firing; in packing and unpacking with limbered wagons.

6. As soon as the men of a section are thoroughly conversant with the mechanism, are able to recognise without delay the cause of any failure and to remedy it at once, and can drill and handle the gun with precision, their further training will be carried out in open country away from barracks. During this training the sections should be practised in bringing the gun into action; in fire discipline; in fire control; in laying and ranging in every variety of country; in utilising natural cover when advancing into action; and in constructing cover from both view and fire. The men should also be trained in range-finding, judging distance, and in the use of field-glasses.

7. When the section is proficient in these branches of training, the commanding officer will arrange for it to be trained with one or more companies which have reached the more advanced stages of company training, in order that it may be practised in co-operating with other troops and in dealing with such situations as would confront it in war. The periods of preliminary training should be arranged so that the section may be ready for this training, without hurrying through the more elementary work. To enable this to be done it will usually be necessary to begin the preliminary training during the winter training season.

General Principles of the Employment of Infantry Machine Guns

1. The normal duty of the infantry machine gun in war is to assist infantry in every way by its fire, but it may be given an independent rôle at any time, if the tactical situation makes it advisable to do so.

2. The effective use of a machine gun depends largely upon the skill with which it has been brought into action. Surprise and concealment are very important factors in its employment; for the effect of the gun is much increased by sudden bursts of fire from concealed positions. The tripod mounting makes it possible to take advantage of small features of the ground to obtain cover and to escape an enemy’s observation. In order to develop the power of the gun to the utmost the fullest use should be made of natural and artificial cover.

3. The depth of the beaten zone of the machine gun is small as compared with that of collective rifle fire. This makes the effect of small errors in sighting for elevation proportionately greater. A section of machine guns cannot therefore be relied upon to make its fire effective when first opening fire, at distances beyond about 1,000 yards. If observation of fire is possible, elevation may be rapidly corrected, and the fire of the two guns may in that case be very effective up to 2,000 yards, or up to the limit of observation. If there is no observation it will be necessary to employ several guns and expend a large quantity of ammunition in order to obtain adequate assurance of effect beyond about 1,000 yards.