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 fire at effective infantry and close infantry ranges is very great, and at close infantry ranges it may, with favourable conditions, be annihilating. Machine guns are very suitable for the development of covering fire within the limits of effective rifle range. They can accompany the troops to which they may be attacked over any country.

3. The action of the mechanism is liable to temporary interruption by jams. Machine guns should not therefore be used singly under normal conditions. They are organised in sections of two guns, which should rarely be broken up.

4. Machine guns are essentially weapons of opportunity. The expenditure of ammunition involved and the nature of the mechanism make long periods of rapid fire unsuitable. The power of the gun is best used to develop unexpected bursts of fire.

The Organisation and Training of Infantry Machine-Gun Sections

1. The strength and composition of a machine-gun section are shown in War Establishments. An infantry machine-gun section is an integral portion of an infantry battalion, but two or more sections may be brought together by the brigade commander and used under the command of a brigade machine-gun officer.

The two non-commissioned officers and twelve