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Light Side Exam Decks > Machine Gun Employment > Flashcards

Machine Gun Employment Flashcards

1
Q

What is the manual for Crew Served Machine Guns?

A

FM 3-22.68

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2
Q

What is the Max Ordinate

A

Highest point of trajectory between muzzle and the base of the target. Usually 2/3 of the range.

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3
Q

What is the Cone of Fire?

A

Pattern a burst of fire makes in the air on it’s way to the target.

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4
Q

What is the beaten zone?

A

Elliptical Pattern forme on the ground by the impact of the rounds.

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5
Q

What is the danger space?

A

Space between the MG and target where the trajectory is less than 1.8m above the ground.

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6
Q

Three classes of fire?

A
  • Respect to the ground
  • Respect to the gun
  • Respect to the target
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7
Q

Two types of fire in respect to the ground.

A
  • Grazing Fire

- Plunging Fire

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8
Q

Six types of fire in respect to the gun?

A
  • Fixed Fire
  • Traversing Fire
  • Searching Fire
  • Traverse and Search
  • Swinging Traverse
  • Free Gun
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9
Q

What is fixed fire?

A

Point target when depth of beaten zone covers the target

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10
Q

What is traversing fire?

A

Fire distributed in width.

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11
Q

What is searching fire?

A

Fire distributed in depth.

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12
Q

What is traversing and searching fire

A

Fire in depth and width

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13
Q

What is swinging traverse?

A

Fire in wider distance than lateral

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14
Q

What is free gun?

A

Rapid major changes in direction and elevation.

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15
Q

What are the four fires in respect to target?

A
  • Frontal Fire
  • Flanking Fire
  • Oblique Fire
  • Enfilade Fire
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16
Q

What is frontal fire?

A

Long axis of the beaten zone is in line with the target at a right angle.

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17
Q

What is flanking fire?

A

Gunner is on the flank of the target

18
Q

What is oblique fire?

A

Fire at anything other than a right angle.

19
Q

What is enfilade fire?

A

The long axis of the beaten zone covers the long axis of the target.

20
Q

What are applications of fire?

A

Methods used to cover a Target area

21
Q

What is the application of fire for a point target?

A

Fixed fire.

22
Q

What is the application of fire for area targets?

A

Gunner fires center mass, then traverses and searches.

23
Q

What is the application of fire for linear targets

A

Initial point of aim is in the middle, then gunner adjusts.

24
Q

What is the application of fire for a deep target?

A

Searching fire

25
Q

At what ranges can you employ overhead fires?

A

350m-850m

26
Q

What AR covers safety measures for overhead fires?

A

AR 350-63

27
Q

What are the conditions of a defilade position?

A
  • Machine gun and crew are completely behind masking terrain.
  • Must have an observer
28
Q

What are the six elements of fire commands?

A
  • Alert
  • Direction
  • Description
  • Range
  • Method of Fire
  • Command to Fire
29
Q

What are the principles of Machine Gun Employment?

A 
Pairs
Interlocking fields of fire
Coordination of Fires
Mutual Support
Defilade
Enfilade
Economy
Protection
30
Q

What are the three rates of fire?

A

Sustained
Rapid
Cyclic

31
Q

Rates of fire for M249

A

Sustained: 50 rpm
Rapid: 100 rpm
Cyclic: 850 rpm

32
Q

Rates of fire for M240?

A

Sustained: 100 rpm
Rapid: 200 rpm
Cyclic: 650-950 rpm

33
Q

What is a sector of fire assigned to?

A

An individual, a weapon, or a unit

34
Q

What is a secondary sector of fire?

A

A different sector fired from the same gun position as the primary.

35
Q

What are final protective fires?

A

The plan to setup a wall of fire as a last ditch defensive effort.

36
Q

What is a final protective line?

A

Grazing fire in a straight line designed to stop an assault.

37
Q

What is the maximum graxin fire range?

A

600m

38
Q

What is deadspace?

A

Gaps in the line of grazing fire

39
Q

What are fire control measures?

A

Predetermined targets including the FPL and the PDF

40
Q

How many minutes of angle in 1 mil?

A

3.5

41
Q

What are the two types of range cards for machine guns?

A

FPL

PDF

42
Q

What is the DA for a range card?

A

DA Form 5517-R

Light Side Exam Decks (2 decks)

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