Machine Gun Employment Flashcards
What is trajectory?
The arching flight path of the round from the muzzle of the
weapon to the target
What is Ordinate?
Elevation of the flight path of the round above the line of
sight
What is Maximum Ordinate?
The maximum elevation of that round above the line of sight
along its flight path. This distance is reached at 2/3 the
distance to the target.
What is the Cone of Fire?
Each round fired from a machine gun travels a different
path. Vibration, tolerances of the ammunition and weapon,
and shooter positions all play a role in these differences.
The pattern of these rounds is called the cone of fire
What is the Beaten Zone?
The beaten zone is defined as the elliptical pattern formed
by the impact of the rounds.
What are the three classifications of machine gun fires?
Respect to the ground, respect to the target, and respect to the gun?
What is Dead Space?
Dead space occurs anytime the target (or
enemy) drops below the line of aim or line of sight.
What is Danger Space?
When firing over terrain, any space up to
1.8 m above the deck (the height of an average man) is
considered danger space; that is, within the effects of the
rounds
What is Plunging Fire?
Plunging fire is defined where the danger
space is confined to the beaten zone
What is Grazing Fire?
Defines fire where the center of the cone of
fire does not rise more than one meter off the deck
What is Flanking Fire?
Fires delivered on the flank of a target,
when the target is oriented 90 or more degrees away from
the firing unit.
What is Frontal Fire?
Fire delivered on the front of a target, when
the target is oriented on the firing unit.
What is Oblique Fire?
Fire delivered on the oblique of a target,
when the target is oriented between 0 and 90 degrees to the
firing unit.
What is Enfilade Fire?
The long axis of the beaten zone coincides with or nearly coincides with the long axis of the target. This class of fire is either Frontal or Flanking and is the most desirable class of fire with respect to the target, because it maximizes the use of the beaten zone
What is Fixed Fire?
Fire delivered on a point target. Little or no
manipulation of the gun is required to obtain and maintain
effect on target.
What is Traversing Fire?
fire delivered against a wide target requiring
changes in direction. The beaten zones of each successive
burst should be adjacent to each other if not overlapping
(may be produced from either a tripod or bipod).
What is Searching Fire?
Fire delivered against a target in depth
requiring changes in elevation. The beaten zones of each
successive burst should be adjacent to each other if not
overlapping
What is Swinging Traverse?
- Fire delivered against targets which
require major changes in direction with little or no change in
elevation. Fired at the cyclic rate of fire using the tripod.
(The beaten zones of each successive burst need not be
adjacent to each other.)
What is Traversing and Searching?
fire delivered against an
oblique target requiring changes in both elevation and
direction. The beaten zones of each successive burst
should be adjacent to each other if not overlapping (may be
produced from either a tripod or bipod).
What is Free Gun?
Fire delivered against moving targets that
require major changes in both direction and elevation. The
beaten zones of each successive burst need not be adjacent
to each other (can only be produced from a tripod or vehicle
mount). The T&E is not used as the manipulation is done by
the Gunner
PICMDEEP
Pairs Interlocking Fires Coordination of Fires Mutual Support Defilade Enfilade Economy Protection
Machine Gun Fighting Positions
Primary
Alternate
Supplemental
Shapes of Fighting Positions
L Shaped
T Shaped
Horse Shoe Shaped
Two Hole Fighting Shaped
What is PDF?
Principle Direction of Fire.The weapons primary focus is covering a
likely avenue of approach, key piece of terrain, or whatever
object of interest that unit leader assigns it
What is FPL?
Final Protective Line.This mission dictates that the weapon is
primarily in a position to employ grazing fires across a units’
frontage as a last effort to defend the lines.
What are the Six Fire Commands?
ADDRAC. -Alert Direction Description Range Asignment Control
