o calculate the range
with the greatest precision. On the defensive indirect fire will be
employed sometimes to annoy the supply, reliefs, etc. To give results,
great quantities of ammunition will have to be expended. All of the
officers and non-commissioned officers and as many men as possible
must be capable of firing the machine gun, so that at the time of an
attack no gun will remain idle for want of personnel. It is, moreover,
essential to keep up the training of the personnel by having them fire
at least twice a month, and, if possible, once a week.

RESUME.

Machine guns must be utilized in the greatest measure in order to
_economize the infantry._

Seek to employ them always in a, _flank fire_.

Conceal them so as to get _surprise fire_.

_Echelon_ them and _shelter_ them so as to avoid their premature
destruction.

POINTS BEFORE FIRING.

1. Thoroughly overhaul the gun to see that no part is deficient,
and that the mechanism works freely.
2. See that the barrel is clean and dry.
3. See that the barrel mouthpiece is tight.
4. See that small hole in gas regulator is to the rear.
5. Thoroughly oil all working parts, especially the cam slot and
exterior of the bolt, and the striker post and piston.
6. Weigh and adjust the mainspring.
7. See that the mounting is firm.
8. Examine the magazines and ammunition.
9. See that the spare parts and oil reserve are handy.

POINTS DURING FIRING

1. During a temporary cessation of fire, re-oil all working parts.
2. Replace a partly emptied magazine with a full one.
3. Examine the mounting to see that it is firm.
4. See that empty magazines are refilled without delay.

POINTS AFTER FIRING.

1. Unload.
2. Oil the bore and chamber, piston rod and gas cylinder.
3. Sort out live rounds from empty cases.
4. See that mainspring is eased.
5. Thoroughly clean and oil the gun on returning to quarters. Clean
the bore daily for several days.

It is of the greatest importance that the points before, during, and
after firing, should be carefully attended to as otherwise the number
of stoppages will be unnecessarily increased.

Nine out of ten stoppages are due to want of care.

Immediate action must become instinctive and automatic.

Grenade Instruction.

INTRODUCTION.--War, as it is being fought on the western front, has
brought to light many new weapons; but no other weapon that this
struggle has brought