Machine Gun Employment

Question 1

What is trajectory?

Answer 1

The arching flight path of the round from the muzzle of the

weapon to the target

Question 2

What is Ordinate?

Answer 2

Elevation of the flight path of the round above the line of

sight

Question 3

What is Maximum Ordinate?

Answer 3

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.

Question 4

What is the Cone of Fire?

Answer 4

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

Question 5

What is the Beaten Zone?

Answer 5

The beaten zone is defined as the elliptical pattern formed

by the impact of the rounds.

Question 6

What are the three classifications of machine gun fires?

Answer 6

Respect to the ground, respect to the target, and respect to the gun?

Question 7

What is Dead Space?

Answer 7

Dead space occurs anytime the target (or

enemy) drops below the line of aim or line of sight.

Question 8

What is Danger Space?

Answer 8

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

Question 9

What is Plunging Fire?

Answer 9

Plunging fire is defined where the danger

space is confined to the beaten zone

Question 10

What is Grazing Fire?

Answer 10

Defines fire where the center of the cone of

fire does not rise more than one meter off the deck

Question 11

What is Flanking Fire?

Answer 11

Fires delivered on the flank of a target,
when the target is oriented 90 or more degrees away from
the firing unit.

Question 12

What is Frontal Fire?

Answer 12

Fire delivered on the front of a target, when

the target is oriented on the firing unit.

Question 13

What is Oblique Fire?

Answer 13

Fire delivered on the oblique of a target,
when the target is oriented between 0 and 90 degrees to the
firing unit.

Question 14

What is Enfilade Fire?

Answer 14

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

Question 15

What is Fixed Fire?

Answer 15

Fire delivered on a point target. Little or no
manipulation of the gun is required to obtain and maintain
effect on target.

Question 16

What is Traversing Fire?

Answer 16

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).

Question 17

What is Searching Fire?

Answer 17

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

Question 18

What is Swinging Traverse?

Answer 18

• 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.)

Question 19

What is Traversing and Searching?

Answer 19

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).

Question 20

What is Free Gun?

Answer 20

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

Question 21

PICMDEEP

Answer 21

Pairs
Interlocking Fires
Coordination of Fires
Mutual Support
Defilade
Enfilade
Economy
Protection

Question 22

Machine Gun Fighting Positions

Answer 22

Primary
Alternate
Supplemental

Question 23

Shapes of Fighting Positions

Answer 23

L Shaped
T Shaped
Horse Shoe Shaped
Two Hole Fighting Shaped

Question 24

What is PDF?

Answer 24

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

Question 25

What is FPL?

Answer 25

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.

Question 26

What are the Six Fire Commands?

Answer 26

ADDRAC.
-Alert
Direction
Description
Range
Asignment
Control