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influences do not make themselves felt in firing under peace conditions, and that, on the other hand, a single favorable hit can place the machine gun out of action for a long period, while the skirmishers can keep up the fire.

3. INFANTRY VERSUS MACHINE GUNS.]

It will rarely be possible to concentrate upon a machine gun battery of six guns a fire equivalent to its own. Because of the small target offered by machine guns, it is necessary for a firing line to concentrate its fire upon one machine gun at a time, thus gradually silencing the battery in detail. This procedure is feasible because it is very difficult for the machine guns to reach with their fire all parts of a well concealed skirmish line. The normal relation, unfavorable for the infantry, changes in its favor, however, as machine guns cannot keep up a high rate of fire for a prolonged period, even when nothing is considered but ammunition supply; as serious breaks are especially apt to occur when the gun is worked to its maximum capacity; and as the ammunition expended in one minute (3600 rounds) cannot produce an effect unless not only the correct range but also the proper elevation is accurately known.

The fight against machine guns may be advantageously conducted according to the following principles:

1. Infantry skirmishers should conceal themselves so well that it will be difficult for the hostile machine gun battery to find them. Color of immediate vicinity (shade) and background should be considered; platoon and other leaders must