MilColl_WWI_82_Box2_079

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2 MSDR
COMBINED SIGHTS
Used for the same purpose aa searching fire, i,e. to secure distribution
in the direction ofdepth/. For this fire two or more guns must be employed in
such differences made in the elevation of the guns or each pair of guns
that their beaten zones will overlap and a greater total of beaten zone
be thus secured.
COVERING FIRE
Fire delivered to faciliatate the movement of troops, and minimize their
losses.
DESIGNATION
The shortest and most easily understood description of an aiming mark.
DIRECTING GUN
The base gun during indirect or barrage fire.
DISTRIBUTED FIRE (TRANSVERSING FIRE)
Fire in which the barrel is moved through a horizontal arc either by use
of successive aiming points, measured angular changes of azimuth, or a continuous
sweeping motion. The second is called the tap method, and the last, the swinging
traverse.
DUMPS
An English term used to designate points where supplies are unloaded and
turned over to line tropps..
FIRE CHART
Chart containing data for indirect or barrage fire.
FIRE FOR EFFECT
That class of fire which has for its object the infliction of losses upon
the enemy.
FIXED FIRE.
Fire in which the barell is not intentionally moved.
GRAPH
See trajectory chart.
GRATICULES
Graduation lines in, or on, an angle measuring device.
INDIRECT FIRE
Fire directed at an object or area of ground which is invisible from the
gun position.
LAYING.
The process of elevating and tranversing a gun until its axis is made to
point in any given direction. On completion of this process the gun is said to
be "Laid".
LAISSON.
Communication between units in the presence of the enemy.
LINE.
The formation of a Machine Gun Unit in which the carriages in each squad
are in column, the squads being abreast of each other.
MACHINE GUN.
A gun that fires infantry ammunition on the automatic principle, but its
recoil is supported by some sort of Mount and the direction of fire is capable
of being clamped.
MASK Fixed
An object, or feature of the terrain which prevents the gunner from seeing
the target. Friendly troops which prevent fireing on a target.
RANGE CARD
An illustrated chart showing ranges to objects to the front. One of these
cards should be prepared for each Machine Gun placement.
RANGING FIRE. (RANGING)
Fire employed preliminary to fire for effect. By observation of point of
strike of ranging fire, the fire controller is enabled to order the correction
necessary, to place the sheaf on the target.
REAR SIGHT. (BACK SIGHT. TANGENT SIGHT)
RECOGNITION.
The gunners understanding of the exact mark at which he is to aim.

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